31100120121102 has 32 divisors (see below), whose sum is σ = 62300345775360. Its totient is φ = 10350023261760.

The previous prime is 31100120121071. The next prime is 31100120121107. The reversal of 31100120121102 is 20112102100113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31100120121107) 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, 213734049 + ... + 213879507.

It is an arithmetic number, because the mean of its divisors is an integer number (1946885805480).

Almost surely, 2^{31100120121102} is an apocalyptic number.

31100120121102 is an abundant number, since it is smaller than the sum of its proper divisors (31200225654258).

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

31100120121102 is a wasteful number, since it uses less digits than its factorization.

31100120121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202568.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 31100120121102 its reverse (20112102100113), we get a palindrome (51212222221215).

The spelling of 31100120121102 in words is "thirty-one trillion, one hundred billion, one hundred twenty million, one hundred twenty-one thousand, one hundred two".