2100012102120 has 64 divisors (see below), whose sum is σ = 6309153829440. Its totient is φ = 559192780800.

The previous prime is 2100012102119. The next prime is 2100012102143. The reversal of 2100012102120 is 212012100012.

It is a super-4 number, since 4×2100012102120⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2100012102096 and 2100012102105.

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 15 ways as a sum of consecutive naturals, for example, 12579961 + ... + 12745800.

It is an arithmetic number, because the mean of its divisors is an integer number (98580528585).

Almost surely, 2^{2100012102120} is an apocalyptic number.

2100012102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100012102120 is an abundant number, since it is smaller than the sum of its proper divisors (4209141727320).

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

2100012102120 is a wasteful number, since it uses less digits than its factorization.

2100012102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25326466 (or 25326462 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2100012102120 its reverse (212012100012), we get a palindrome (2312024202132).

The spelling of 2100012102120 in words is "two trillion, one hundred billion, twelve million, one hundred two thousand, one hundred twenty".