| Base | Representation |
|---|---|
| bin | 1010111011101110011101… |
| … | …1011000000110010010100 |
| 3 | 1120120012211011201012020200 |
| 4 | 2232323213123000302110 |
| 5 | 3033423404441042322 |
| 6 | 41322244043300500 |
| 7 | 2350334366336205 |
| oct | 256734733006224 |
| 9 | 46505734635220 |
| 10 | 12021201112212 |
| 11 | 39151876aa246 |
| 12 | 1421957b1a730 |
| 13 | 692795b8acb6 |
| 14 | 2d7b876035ac |
| 15 | 15ca743468ac |
| hex | aeee76c0c94 |
12021201112212 has 72 divisors (see below), whose sum is σ = 30892233520512. Its totient is φ = 3940463419200.
The previous prime is 12021201112211. The next prime is 12021201112223. The reversal of 12021201112212 is 21221110212021.
12021201112212 is a `hidden beast` number, since 120 + 21 + 201 + 112 + 212 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12021201112211) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8869537 + ... + 10134647.
It is an arithmetic number, because the mean of its divisors is an integer number (429058798896).
Almost surely, 212021201112212 is an apocalyptic number.
12021201112212 is a gapful number since it is divisible by the number (12) 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 12021201112212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15446116760256).
12021201112212 is an abundant number, since it is smaller than the sum of its proper divisors (18871032408300).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12021201112212 is a wasteful number, since it uses less digits than its factorization.
12021201112212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1269509 (or 1269504 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 18.
Adding to 12021201112212 its reverse (21221110212021), we get a palindrome (33242311324233).
The spelling of 12021201112212 in words is "twelve trillion, twenty-one billion, two hundred one million, one hundred twelve thousand, two hundred twelve".
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