210001200120100 has 36 divisors (see below), whose sum is σ = 455720137600000. Its totient is φ = 83997248096160.

The previous prime is 210001200120029. The next prime is 210001200120133. The reversal of 210001200120100 is 1021002100012.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37786500 + ... + 42986299.

Almost surely, 2^{210001200120100} is an apocalyptic number.

210001200120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210001200120100 is an abundant number, since it is smaller than the sum of its proper divisors (245718937479900).

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

210001200120100 is a wasteful number, since it uses less digits than its factorization.

210001200120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80798812 (or 80798805 counting only the distinct ones).

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

Adding to 210001200120100 its reverse (1021002100012), we get a palindrome (211022202220112).

The spelling of 210001200120100 in words is "two hundred ten trillion, one billion, two hundred million, one hundred twenty thousand, one hundred".