31110011222121 has 48 divisors (see below), whose sum is σ = 48979632199680. Its totient is φ = 18913060742400.

The previous prime is 31110011222083. The next prime is 31110011222137. The reversal of 31110011222121 is 12122211001113.

It is a happy number.

31110011222121 is a `hidden beast` number, since 311 + 1 + 0 + 0 + 11 + 222 + 121 = 666.

It is not a de Polignac number, because 31110011222121 - 2¹⁵ = 31110011189353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31110011222094 and 31110011222103.

It is not an unprimeable number, because it can be changed into a prime (31110011222221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10687530 + ... + 13283196.

It is an arithmetic number, because the mean of its divisors is an integer number (1020409004160).

Almost surely, 2^{31110011222121} is an apocalyptic number.

It is an amenable number.

31110011222121 is a deficient number, since it is larger than the sum of its proper divisors (17869620977559).

31110011222121 is a wasteful number, since it uses less digits than its factorization.

31110011222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596926 (or 2596923 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 31110011222121 its reverse (12122211001113), we get a palindrome (43232222223234).

The spelling of 31110011222121 in words is "thirty-one trillion, one hundred ten billion, eleven million, two hundred twenty-two thousand, one hundred twenty-one".