2100200121012 has 48 divisors (see below), whose sum is σ = 5793655512960. Its totient is φ = 579365549952.

The previous prime is 2100200121007. The next prime is 2100200121049. The reversal of 2100200121012 is 2101210020012.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431073123 + ... + 431077994.

It is an arithmetic number, because the mean of its divisors is an integer number (120701156520).

Almost surely, 2^{2100200121012} is an apocalyptic number.

It is an amenable number.

2100200121012 is an abundant number, since it is smaller than the sum of its proper divisors (3693455391948).

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

2100200121012 is a wasteful number, since it uses less digits than its factorization.

2100200121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862151160 (or 862151158 counting only the distinct ones).

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

Adding to 2100200121012 its reverse (2101210020012), we get a palindrome (4201410141024).

The spelling of 2100200121012 in words is "two trillion, one hundred billion, two hundred million, one hundred twenty-one thousand, twelve".