21231322313102 has 24 divisors (see below), whose sum is σ = 35021223937728. Its totient is φ = 9646228085120.

The previous prime is 21231322313053. The next prime is 21231322313147. The reversal of 21231322313102 is 20131322313212.

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, 19341923 + ... + 20410110.

It is an arithmetic number, because the mean of its divisors is an integer number (1459217664072).

Almost surely, 2^{21231322313102} is an apocalyptic number.

21231322313102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21231322313102 is a deficient number, since it is larger than the sum of its proper divisors (13789901624626).

21231322313102 is a wasteful number, since it uses less digits than its factorization.

21231322313102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39754264 (or 39754253 counting only the distinct ones).

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

Adding to 21231322313102 its reverse (20131322313212), we get a palindrome (41362644626314).

The spelling of 21231322313102 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred twenty-two million, three hundred thirteen thousand, one hundred two".