100200002120 has 32 divisors (see below), whose sum is σ = 225462528000. Its totient is φ = 40077774528.

The previous prime is 100200002087. The next prime is 100200002183. The reversal of 100200002120 is 21200002001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 100200002098 and 100200002107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790931 + ... + 908829.

It is an arithmetic number, because the mean of its divisors is an integer number (7045704000).

Almost surely, 2^100200002120 is an apocalyptic number.

100200002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100200002120 is an abundant number, since it is smaller than the sum of its proper divisors (125262525880).

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

100200002120 is a wasteful number, since it uses less digits than its factorization.

100200002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139157 (or 139153 counting only the distinct ones).

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

Adding to 100200002120 its reverse (21200002001), we get a palindrome (121400004121).

The spelling of 100200002120 in words is "one hundred billion, two hundred million, two thousand, one hundred twenty".