31120012220120 has 16 divisors (see below), whose sum is σ = 70020027495360. Its totient is φ = 12448004888032.

The previous prime is 31120012220113. The next prime is 31120012220149. The reversal of 31120012220120 is 2102221002113.

31120012220120 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389000152712 + ... + 389000152791.

It is an arithmetic number, because the mean of its divisors is an integer number (4376251718460).

Almost surely, 2^{31120012220120} is an apocalyptic number.

It is an amenable number.

31120012220120 is an abundant number, since it is smaller than the sum of its proper divisors (38900015275240).

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

31120012220120 is a wasteful number, since it uses less digits than its factorization.

31120012220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778000305514 (or 778000305510 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31120012220120 its reverse (2102221002113), we get a palindrome (33222233222233).

The spelling of 31120012220120 in words is "thirty-one trillion, one hundred twenty billion, twelve million, two hundred twenty thousand, one hundred twenty".