2100120202220 has 24 divisors (see below), whose sum is σ = 4410948643584. Its totient is φ = 839915467776.

The previous prime is 2100120202217. The next prime is 2100120202231. The reversal of 2100120202220 is 222020210012.

It is a junction number, because it is equal to n+sod(n) for n = 2100120202195 and 2100120202204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8158412 + ... + 8411891.

It is an arithmetic number, because the mean of its divisors is an integer number (183789526816).

Almost surely, 2^{2100120202220} is an apocalyptic number.

2100120202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100120202220 is an abundant number, since it is smaller than the sum of its proper divisors (2310828441364).

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

2100120202220 is a wasteful number, since it uses less digits than its factorization.

2100120202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16576649 (or 16576647 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2100120202220 its reverse (222020210012), we get a palindrome (2322140412232).

The spelling of 2100120202220 in words is "two trillion, one hundred billion, one hundred twenty million, two hundred two thousand, two hundred twenty".