31020123221022 has 32 divisors (see below), whose sum is σ = 68967817390080. Its totient is φ = 9236761256160.

The previous prime is 31020123220987. The next prime is 31020123221077. The reversal of 31020123221022 is 22012232102013.

It is a self number, because there is not a number n which added to its sum of digits gives 31020123221022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6414415122 + ... + 6414419957.

It is an arithmetic number, because the mean of its divisors is an integer number (2155244293440).

Almost surely, 2^{31020123221022} is an apocalyptic number.

31020123221022 is an abundant number, since it is smaller than the sum of its proper divisors (37947694169058).

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

31020123221022 is a wasteful number, since it uses less digits than its factorization.

31020123221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12828835128.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31020123221022 its reverse (22012232102013), we get a palindrome (53032355323035).

The spelling of 31020123221022 in words is "thirty-one trillion, twenty billion, one hundred twenty-three million, two hundred twenty-one thousand, twenty-two".