20312231021022 has 16 divisors (see below), whose sum is σ = 41180961522960. Its totient is φ = 6677993760192.

The previous prime is 20312231020987. The next prime is 20312231021053. The reversal of 20312231021022 is 22012013221302.

It is a self number, because there is not a number n which added to its sum of digits gives 20312231021022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23187477897 + ... + 23187478772.

It is an arithmetic number, because the mean of its divisors is an integer number (2573810095185).

Almost surely, 2^{20312231021022} is an apocalyptic number.

20312231021022 is an abundant number, since it is smaller than the sum of its proper divisors (20868730501938).

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

20312231021022 is a wasteful number, since it uses less digits than its factorization.

20312231021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46374956747.

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

Adding to 20312231021022 its reverse (22012013221302), we get a palindrome (42324244242324).

The spelling of 20312231021022 in words is "twenty trillion, three hundred twelve billion, two hundred thirty-one million, twenty-one thousand, twenty-two".