2100120020120 has 32 divisors (see below), whose sum is σ = 4814426088720. Its totient is φ = 824198044800.

The previous prime is 2100120020099. The next prime is 2100120020153. The reversal of 2100120020120 is 210200210012.

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 7 ways as a sum of consecutive naturals, for example, 495309206 + ... + 495313445.

Almost surely, 2^{2100120020120} is an apocalyptic number.

2100120020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100120020120 is an abundant number, since it is smaller than the sum of its proper divisors (2714306068600).

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

2100120020120 is a wasteful number, since it uses less digits than its factorization.

2100120020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990622715 (or 990622711 counting only the distinct ones).

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

Adding to 2100120020120 its reverse (210200210012), we get a palindrome (2310320230132).

The spelling of 2100120020120 in words is "two trillion, one hundred billion, one hundred twenty million, twenty thousand, one hundred twenty".