2100212120120 has 64 divisors (see below), whose sum is σ = 4938217773120. Its totient is φ = 802372240384.

The previous prime is 2100212120101. The next prime is 2100212120131. The reversal of 2100212120120 is 210212120012.

It is a junction number, because it is equal to n+sod(n) for n = 2100212120095 and 2100212120104.

It is a congruent number.

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, 1063157 + ... + 2308836.

It is an arithmetic number, because the mean of its divisors is an integer number (77159652705).

Almost surely, 2^{2100212120120} is an apocalyptic number.

2100212120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100212120120 is an abundant number, since it is smaller than the sum of its proper divisors (2838005653000).

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

2100212120120 is a wasteful number, since it uses less digits than its factorization.

2100212120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372704 (or 3372700 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2100212120120 its reverse (210212120012), we get a palindrome (2310424240132).

The spelling of 2100212120120 in words is "two trillion, one hundred billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty".