2102123112120 has 128 divisors (see below), whose sum is σ = 7076454408000. Its totient is φ = 555015974400.

The previous prime is 2102123112113. The next prime is 2102123112197. The reversal of 2102123112120 is 212113212012.

2102123112120 is a `hidden beast` number, since 21 + 0 + 212 + 311 + 2 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2102123112093 and 2102123112102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9526615 + ... + 9744774.

Almost surely, 2^{2102123112120} is an apocalyptic number.

2102123112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102123112120 is an abundant number, since it is smaller than the sum of its proper divisors (4974331295880).

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

2102123112120 is a wasteful number, since it uses less digits than its factorization.

2102123112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19271510 (or 19271500 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2102123112120 its reverse (212113212012), we get a palindrome (2314236324132).

The spelling of 2102123112120 in words is "two trillion, one hundred two billion, one hundred twenty-three million, one hundred twelve thousand, one hundred twenty".