21122111323233 has 16 divisors (see below), whose sum is σ = 31805000659200. Its totient is φ = 13850564801040.

The previous prime is 21122111323223. The next prime is 21122111323279. The reversal of 21122111323233 is 33232311122112.

21122111323233 is a `hidden beast` number, since 2 + 1 + 1 + 221 + 113 + 2 + 323 + 3 = 666.

It is not a de Polignac number, because 21122111323233 - 2³⁶ = 21053391846497 is a prime.

It is a super-2 number, since 2×21122111323233² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21122111323197 and 21122111323206.

It is not an unprimeable number, because it can be changed into a prime (21122111323223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6412296873 + ... + 6412300166.

It is an arithmetic number, because the mean of its divisors is an integer number (1987812541200).

Almost surely, 2^{21122111323233} is an apocalyptic number.

It is an amenable number.

21122111323233 is a deficient number, since it is larger than the sum of its proper divisors (10682889335967).

21122111323233 is a wasteful number, since it uses less digits than its factorization.

21122111323233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12824597109 (or 12824597103 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 21122111323233 its reverse (33232311122112), we get a palindrome (54354422445345).

The spelling of 21122111323233 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred eleven million, three hundred twenty-three thousand, two hundred thirty-three".