21231312133022 has 24 divisors (see below), whose sum is σ = 32927014662696. Its totient is φ = 10261885310208.

The previous prime is 21231312132967. The next prime is 21231312133051. The reversal of 21231312133022 is 22033121313212.

It is a super-2 number, since 2×21231312133022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21231312132982 and 21231312133000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12309953 + ... + 13928300.

It is an arithmetic number, because the mean of its divisors is an integer number (1371958944279).

Almost surely, 2^{21231312133022} is an apocalyptic number.

21231312133022 is a deficient number, since it is larger than the sum of its proper divisors (11695702529674).

21231312133022 is an equidigital number, since it uses as much as digits as its factorization.

21231312133022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26238492 (or 26238395 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21231312133022 its reverse (22033121313212), we get a palindrome (43264433446234).

The spelling of 21231312133022 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred twelve million, one hundred thirty-three thousand, twenty-two".