2100012200120 has 16 divisors (see below), whose sum is σ = 4725027450360. Its totient is φ = 840004880032.

The previous prime is 2100012200107. The next prime is 2100012200131. The reversal of 2100012200120 is 210022100012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26250152462 + ... + 26250152541.

Almost surely, 2^{2100012200120} is an apocalyptic number.

2100012200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100012200120 is an abundant number, since it is smaller than the sum of its proper divisors (2625015250240).

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

2100012200120 is a wasteful number, since it uses less digits than its factorization.

2100012200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52500305014 (or 52500305010 counting only the distinct ones).

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

Adding to 2100012200120 its reverse (210022100012), we get a palindrome (2310034300132).

The spelling of 2100012200120 in words is "two trillion, one hundred billion, twelve million, two hundred thousand, one hundred twenty".