2100021201992 has 16 divisors (see below), whose sum is σ = 4500045432960. Its totient is φ = 900009086544.

The previous prime is 2100021201959. The next prime is 2100021202007. The reversal of 2100021201992 is 2991021200012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18750189248 + ... + 18750189359.

It is an arithmetic number, because the mean of its divisors is an integer number (281252839560).

Almost surely, 2^{2100021201992} is an apocalyptic number.

It is an amenable number.

2100021201992 is an abundant number, since it is smaller than the sum of its proper divisors (2400024230968).

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

2100021201992 is a wasteful number, since it uses less digits than its factorization.

2100021201992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37500378620 (or 37500378616 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 2100021201992 in words is "two trillion, one hundred billion, twenty-one million, two hundred one thousand, nine hundred ninety-two".