201021100120200 has 48 divisors (see below), whose sum is σ = 623165410374480. Its totient is φ = 53605626698560.

The previous prime is 201021100120133. The next prime is 201021100120231. The reversal of 201021100120200 is 2021001120102.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167517582834 + ... + 167517584033.

It is an arithmetic number, because the mean of its divisors is an integer number (12982612716135).

Almost surely, 2^{201021100120200} is an apocalyptic number.

201021100120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021100120200 is an abundant number, since it is smaller than the sum of its proper divisors (422144310254280).

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

201021100120200 is a wasteful number, since it uses less digits than its factorization.

201021100120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335035166886 (or 335035166877 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201021100120200 its reverse (2021001120102), we get a palindrome (203042101240302).

The spelling of 201021100120200 in words is "two hundred one trillion, twenty-one billion, one hundred million, one hundred twenty thousand, two hundred".