102120111002100 has 72 divisors (see below), whose sum is σ = 304998731554048. Its totient is φ = 26353577030400.

The previous prime is 102120111002093. The next prime is 102120111002171. The reversal of 102120111002100 is 1200111021201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5490319249 + ... + 5490337848.

Almost surely, 2^{102120111002100} is an apocalyptic number.

102120111002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102120111002100 is an abundant number, since it is smaller than the sum of its proper divisors (202878620551948).

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

102120111002100 is a wasteful number, since it uses less digits than its factorization.

102120111002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10980657145 (or 10980657138 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102120111002100 its reverse (1200111021201), we get a palindrome (103320222023301).

The spelling of 102120111002100 in words is "one hundred two trillion, one hundred twenty billion, one hundred eleven million, two thousand, one hundred".