13031121022122 has 16 divisors (see below), whose sum is σ = 29785419479232. Its totient is φ = 3723177434880.

The previous prime is 13031121022111. The next prime is 13031121022123. The reversal of 13031121022122 is 22122012113031.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (13031121022123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155132393079 + ... + 155132393162.

It is an arithmetic number, because the mean of its divisors is an integer number (1861588717452).

Almost surely, 2^{13031121022122} is an apocalyptic number.

13031121022122 is an abundant number, since it is smaller than the sum of its proper divisors (16754298457110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13031121022122 is a wasteful number, since it uses less digits than its factorization.

13031121022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310264786253.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 13031121022122 its reverse (22122012113031), we get a palindrome (35153133135153).

The spelling of 13031121022122 in words is "thirteen trillion, thirty-one billion, one hundred twenty-one million, twenty-two thousand, one hundred twenty-two".