2100120121002 has 32 divisors (see below), whose sum is σ = 4550739095232. Its totient is φ = 643538859264.

The previous prime is 2100120120997. The next prime is 2100120121039. The reversal of 2100120121002 is 2001210210012.

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, 239407393 + ... + 239416164.

It is an arithmetic number, because the mean of its divisors is an integer number (142210596726).

Almost surely, 2^{2100120121002} is an apocalyptic number.

2100120121002 is an abundant number, since it is smaller than the sum of its proper divisors (2450618974230).

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

2100120121002 is a wasteful number, since it uses less digits than its factorization.

2100120121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478823622.

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

Adding to 2100120121002 its reverse (2001210210012), we get a palindrome (4101330331014).

The spelling of 2100120121002 in words is "two trillion, one hundred billion, one hundred twenty million, one hundred twenty-one thousand, two".