2102111020120 has 64 divisors (see below), whose sum is σ = 4742373096000. Its totient is φ = 838601011200.

The previous prime is 2102111020111. The next prime is 2102111020159. The reversal of 2102111020120 is 210201112012.

It is a self number, because there is not a number n which added to its sum of digits gives 2102111020120.

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, 182834212 + ... + 182845708.

It is an arithmetic number, because the mean of its divisors is an integer number (74099579625).

Almost surely, 2^{2102111020120} is an apocalyptic number.

2102111020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102111020120 is an abundant number, since it is smaller than the sum of its proper divisors (2640262075880).

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

2102111020120 is a wasteful number, since it uses less digits than its factorization.

2102111020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23308 (or 23304 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2102111020120 its reverse (210201112012), we get a palindrome (2312312132132).

The spelling of 2102111020120 in words is "two trillion, one hundred two billion, one hundred eleven million, twenty thousand, one hundred twenty".