2100202212120 has 32 divisors (see below), whose sum is σ = 6300606636720. Its totient is φ = 560053923200.

The previous prime is 2100202212107. The next prime is 2100202212139. The reversal of 2100202212120 is 212122020012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2100202212120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8750842431 + ... + 8750842670.

Almost surely, 2^{2100202212120} is an apocalyptic number.

2100202212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100202212120 is an abundant number, since it is smaller than the sum of its proper divisors (4200404424600).

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

2100202212120 is a wasteful number, since it uses less digits than its factorization.

2100202212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17501685115 (or 17501685111 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2100202212120 its reverse (212122020012), we get a palindrome (2312324232132).

The spelling of 2100202212120 in words is "two trillion, one hundred billion, two hundred two million, two hundred twelve thousand, one hundred twenty".