| Base | Representation |
|---|---|
| bin | 10001110010010001011… |
| … | …101011000110010111000 |
| 3 | 11022211201222211111211200 |
| 4 | 101302101131120302320 |
| 5 | 130011042021041440 |
| 6 | 2333250453454200 |
| 7 | 154205350016655 |
| oct | 21622135306270 |
| 9 | 4284658744750 |
| 10 | 1222211112120 |
| 11 | 4313783453a9 |
| 12 | 178a58041360 |
| 13 | 8b33c0b4abb |
| 14 | 43226340c2c |
| 15 | 21bd4b1ac30 |
| hex | 11c91758cb8 |
1222211112120 has 192 divisors, whose sum is σ = 4119938540640. Its totient is φ = 313974144000.
The previous prime is 1222211112119. The next prime is 1222211112139. The reversal of 1222211112120 is 212111122221.
1222211112120 is a `hidden beast` number, since 1 + 222 + 211 + 112 + 120 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 1222211112093 and 1222211112102.
It is a congruent number.
It is an unprimeable number.
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 47 ways as a sum of consecutive naturals, for example, 891075 + ... + 1799565.
Almost surely, 21222211112120 is an apocalyptic number.
1222211112120 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 1222211112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059969270320).
1222211112120 is an abundant number, since it is smaller than the sum of its proper divisors (2897727428520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1222211112120 is a wasteful number, since it uses less digits than its factorization.
1222211112120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 908646 (or 908639 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 18.
Adding to 1222211112120 its reverse (212111122221), we get a palindrome (1434322234341).
It can be divided in two parts, 1222211 and 112120, that added together give a palindrome (1334331).
The spelling of 1222211112120 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty".
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