102131123100 has 36 divisors (see below), whose sum is σ = 295499383704. Its totient is φ = 27234966080.

The previous prime is 102131123063. The next prime is 102131123147. The reversal of 102131123100 is 1321131201.

It is a happy number.

It is a super-2 number, since 2×102131123100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102131123100.

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, 170218239 + ... + 170218838.

It is an arithmetic number, because the mean of its divisors is an integer number (8208316214).

Almost surely, 2^102131123100 is an apocalyptic number.

102131123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102131123100 is an abundant number, since it is smaller than the sum of its proper divisors (193368260604).

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

102131123100 is a wasteful number, since it uses less digits than its factorization.

102131123100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340437094 (or 340437087 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 102131123100 its reverse (1321131201), we get a palindrome (103452254301).

The spelling of 102131123100 in words is "one hundred two billion, one hundred thirty-one million, one hundred twenty-three thousand, one hundred".