| Base | Representation |
|---|---|
| bin | 1010111011001000110101… |
| … | …0111001000100000010100 |
| 3 | 1120112020202020002020222112 |
| 4 | 2232302031113020200110 |
| 5 | 3033242213123224340 |
| 6 | 41313453454050152 |
| 7 | 2346526155160235 |
| oct | 256621527104024 |
| 9 | 46466666066875 |
| 10 | 12011100211220 |
| 11 | 3910973a38890 |
| 12 | 141b9b91a9958 |
| 13 | 691846302bc6 |
| 14 | 2d74a9cd708c |
| 15 | 15c6826a7065 |
| hex | aec8d5c8814 |
12011100211220 has 96 divisors (see below), whose sum is σ = 28010542694400. Its totient is φ = 4289806684800.
The previous prime is 12011100211219. The next prime is 12011100211223. The reversal of 12011100211220 is 2211200111021.
It is a super-2 number, since 2×120111002112202 (a number of 27 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 12011100211195 and 12011100211204.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12011100211223) 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 31 ways as a sum of consecutive naturals, for example, 1510451 + ... + 5128709.
It is an arithmetic number, because the mean of its divisors is an integer number (291776486400).
Almost surely, 212011100211220 is an apocalyptic number.
12011100211220 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 12011100211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14005271347200).
12011100211220 is an abundant number, since it is smaller than the sum of its proper divisors (15999442483180).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12011100211220 is a wasteful number, since it uses less digits than its factorization.
12011100211220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3618549 (or 3618547 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 14.
Adding to 12011100211220 its reverse (2211200111021), we get a palindrome (14222300322241).
The spelling of 12011100211220 in words is "twelve trillion, eleven billion, one hundred million, two hundred eleven thousand, two hundred twenty".
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