2101200020120 has 32 divisors (see below), whose sum is σ = 4727742087600. Its totient is φ = 840472533888.

The previous prime is 2101200020093. The next prime is 2101200020123. The reversal of 2101200020120 is 210200021012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101200020123) 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, 7403882 + ... + 7682438.

Almost surely, 2^{2101200020120} is an apocalyptic number.

2101200020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101200020120 is an abundant number, since it is smaller than the sum of its proper divisors (2626542067480).

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

2101200020120 is a wasteful number, since it uses less digits than its factorization.

2101200020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467147 (or 467143 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2101200020120 its reverse (210200021012), we get a palindrome (2311400041132).

The spelling of 2101200020120 in words is "two trillion, one hundred one billion, two hundred million, twenty thousand, one hundred twenty".