102100011020 has 48 divisors (see below), whose sum is σ = 250253660160. Its totient is φ = 34260913344.

The previous prime is 102100010981. The next prime is 102100011113. The reversal of 102100011020 is 20110001201.

It is a junction number, because it is equal to n+sod(n) for n = 102100010989 and 102100011007.

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, 7751780 + ... + 7764939.

It is an arithmetic number, because the mean of its divisors is an integer number (5213617920).

Almost surely, 2^102100011020 is an apocalyptic number.

102100011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100011020 is an abundant number, since it is smaller than the sum of its proper divisors (148153649140).

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

102100011020 is a wasteful number, since it uses less digits than its factorization.

102100011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15516782 (or 15516780 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 102100011020 its reverse (20110001201), we get a palindrome (122210012221).

The spelling of 102100011020 in words is "one hundred two billion, one hundred million, eleven thousand, twenty".