| Base | Representation |
|---|---|
| bin | 11001010001000001100000… |
| … | …011101011110100100001100 |
| 3 | 112120110001202101211000221102 |
| 4 | 121101001200131132210030 |
| 5 | 104031101313112102340 |
| 6 | 1032200142134122232 |
| 7 | 32256141162265310 |
| oct | 3121014035364414 |
| 9 | 476401671730842 |
| 10 | 111121012222220 |
| 11 | 3245217a5317a0 |
| 12 | 10567bb61b0378 |
| 13 | 4a00888380700 |
| 14 | 1d623ddcddb40 |
| 15 | cca7a4c27215 |
| hex | 65106075e90c |
111121012222220 has 288 divisors, whose sum is σ = 315066696053760. Its totient is φ = 31967779783680.
The previous prime is 111121012222183. The next prime is 111121012222229. The reversal of 111121012222220 is 22222210121111.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a junction number, because it is equal to n+sod(n) for n = 111121012222192 and 111121012222201.
It is not an unprimeable number, because it can be changed into a prime (111121012222229) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5042005961 + ... + 5042027999.
It is an arithmetic number, because the mean of its divisors is an integer number (1093981583520).
Almost surely, 2111121012222220 is an apocalyptic number.
111121012222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 111121012222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157533348026880).
111121012222220 is an abundant number, since it is smaller than the sum of its proper divisors (203945683831540).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
111121012222220 is a wasteful number, since it uses less digits than its factorization.
111121012222220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 41465 (or 41450 counting only the distinct ones).
The product of its (nonzero) digits is 128, while the sum is 20.
Adding to 111121012222220 its reverse (22222210121111), we get a palindrome (133343222343331).
The spelling of 111121012222220 in words is "one hundred eleven trillion, one hundred twenty-one billion, twelve million, two hundred twenty-two thousand, two hundred twenty".
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