102020100102 has 32 divisors (see below), whose sum is σ = 228212751360. Its totient is φ = 33781487400.

The previous prime is 102020100079. The next prime is 102020100157. The reversal of 102020100102 is 201001020201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6247678 + ... + 6263985.

It is an arithmetic number, because the mean of its divisors is an integer number (7131648480).

Almost surely, 2^102020100102 is an apocalyptic number.

102020100102 is an abundant number, since it is smaller than the sum of its proper divisors (126192651258).

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

102020100102 is a wasteful number, since it uses less digits than its factorization.

102020100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12511825 (or 12511819 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102020100102 its reverse (201001020201), we get a palindrome (303021120303).

The spelling of 102020100102 in words is "one hundred two billion, twenty million, one hundred thousand, one hundred two".