2100210120999 has 8 divisors (see below), whose sum is σ = 3111422401520. Its totient is φ = 1400140080648.

The previous prime is 2100210120997. The next prime is 2100210121019. The reversal of 2100210120999 is 9990210120012.

It is not a de Polignac number, because 2100210120999 - 2¹ = 2100210120997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100210120997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38892779992 + ... + 38892780045.

It is an arithmetic number, because the mean of its divisors is an integer number (388927800190).

Almost surely, 2^{2100210120999} is an apocalyptic number.

2100210120999 is a deficient number, since it is larger than the sum of its proper divisors (1011212280521).

2100210120999 is an equidigital number, since it uses as much as digits as its factorization.

2100210120999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77785560046 (or 77785560040 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The spelling of 2100210120999 in words is "two trillion, one hundred billion, two hundred ten million, one hundred twenty thousand, nine hundred ninety-nine".