Base | Representation |
---|---|
bin | 11110101111001001101… |
… | …001110000111100010001 |
3 | 21110220222200201201022200 |
4 | 132233021221300330101 |
5 | 234101302300023441 |
6 | 4254200431553413 |
7 | 305413404466050 |
oct | 36571151607421 |
9 | 7426880651280 |
10 | 2112212111121 |
11 | 744869742802 |
12 | 2a143b68b869 |
13 | 124247143368 |
14 | 74335784397 |
15 | 39e243d57b6 |
hex | 1ebc9a70f11 |
2112212111121 has 24 divisors (see below), whose sum is σ = 3486890244864. Its totient is φ = 1206956229120.
The previous prime is 2112212111069. The next prime is 2112212111161. The reversal of 2112212111121 is 1211112122112.
It is a happy number.
2112212111121 is a `hidden beast` number, since 211 + 221 + 2 + 111 + 121 = 666.
It is not a de Polignac number, because 2112212111121 - 26 = 2112212111057 is a prime.
It is a super-2 number, since 2×21122121111212 (a number of 25 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 2112212111094 and 2112212111103.
It is not an unprimeable number, because it can be changed into a prime (2112212111161) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3536241 + ... + 4090161.
It is an arithmetic number, because the mean of its divisors is an integer number (145287093536).
Almost surely, 22112212111121 is an apocalyptic number.
2112212111121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
It is an amenable number.
2112212111121 is a deficient number, since it is larger than the sum of its proper divisors (1374678133743).
2112212111121 is a wasteful number, since it uses less digits than its factorization.
2112212111121 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 614461 (or 614458 counting only the distinct ones).
The product of its digits is 32, while the sum is 18.
Adding to 2112212111121 its reverse (1211112122112), we get a palindrome (3323324233233).
The spelling of 2112212111121 in words is "two trillion, one hundred twelve billion, two hundred twelve million, one hundred eleven thousand, one hundred twenty-one".
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