21230131022 has 32 divisors (see below), whose sum is σ = 32542248960. Its totient is φ = 10385686080.

The previous prime is 21230131019. The next prime is 21230131051. The reversal of 21230131022 is 22013103212.

It is a super-2 number, since 2×21230131022² (a number of 21 digits) contains 22 as substring.

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, 10555997 + ... + 10558007.

It is an arithmetic number, because the mean of its divisors is an integer number (1016945280).

Almost surely, 2^21230131022 is an apocalyptic number.

21230131022 is a deficient number, since it is larger than the sum of its proper divisors (11312117938).

21230131022 is a wasteful number, since it uses less digits than its factorization.

21230131022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21230131022 its reverse (22013103212), we get a palindrome (43243234234).

The spelling of 21230131022 in words is "twenty-one billion, two hundred thirty million, one hundred thirty-one thousand, twenty-two".