31102220111120 has 40 divisors (see below), whose sum is σ = 72313214634240. Its totient is φ = 12440792926080.

The previous prime is 31102220111117. The next prime is 31102220111147. The reversal of 31102220111120 is 2111102220113.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9551855 + ... + 12387185.

It is an arithmetic number, because the mean of its divisors is an integer number (1807830365856).

Almost surely, 2^{31102220111120} is an apocalyptic number.

It is an amenable number.

31102220111120 is an abundant number, since it is smaller than the sum of its proper divisors (41210994523120).

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

31102220111120 is a wasteful number, since it uses less digits than its factorization.

31102220111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972463 (or 2972457 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 31102220111120 its reverse (2111102220113), we get a palindrome (33213322331233).

The spelling of 31102220111120 in words is "thirty-one trillion, one hundred two billion, two hundred twenty million, one hundred eleven thousand, one hundred twenty".