102123310321020 has 48 divisors (see below), whose sum is σ = 292595158880640. Its totient is φ = 26599559896896.

The previous prime is 102123310321009. The next prime is 102123310321033. The reversal of 102123310321020 is 20123013321201.

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, 19791336630 + ... + 19791341789.

It is an arithmetic number, because the mean of its divisors is an integer number (6095732476680).

Almost surely, 2^{102123310321020} is an apocalyptic number.

102123310321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102123310321020 is an abundant number, since it is smaller than the sum of its proper divisors (190471848559620).

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

102123310321020 is a wasteful number, since it uses less digits than its factorization.

102123310321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39582678474 (or 39582678472 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 102123310321020 its reverse (20123013321201), we get a palindrome (122246323642221).

The spelling of 102123310321020 in words is "one hundred two trillion, one hundred twenty-three billion, three hundred ten million, three hundred twenty-one thousand, twenty".