102100100200120 has 64 divisors (see below), whose sum is σ = 253425172197600. Its totient is φ = 36710148372480.

The previous prime is 102100100200079. The next prime is 102100100200159. The reversal of 102100100200120 is 21002001001201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 102100100200097 and 102100100200106.

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, 1303588269 + ... + 1303666588.

Almost surely, 2^{102100100200120} is an apocalyptic number.

102100100200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100100200120 is an abundant number, since it is smaller than the sum of its proper divisors (151325071997480).

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

102100100200120 is a wasteful number, since it uses less digits than its factorization.

102100100200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607254968 (or 2607254964 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102100100200120 its reverse (21002001001201), we get a palindrome (123102101201321).

The spelling of 102100100200120 in words is "one hundred two trillion, one hundred billion, one hundred million, two hundred thousand, one hundred twenty".