2102111212120 has 32 divisors (see below), whose sum is σ = 4729956210000. Its totient is φ = 840807865728.

The previous prime is 2102111212067. The next prime is 2102111212171. The reversal of 2102111212120 is 212121112012.

It is a junction number, because it is equal to n+sod(n) for n = 2102111212094 and 2102111212103.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 204870 + ... + 2060629.

Almost surely, 2^{2102111212120} is an apocalyptic number.

2102111212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102111212120 is an abundant number, since it is smaller than the sum of its proper divisors (2627844997880).

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

2102111212120 is a wasteful number, since it uses less digits than its factorization.

2102111212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288707 (or 2288703 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2102111212120 its reverse (212121112012), we get a palindrome (2314232324132).

The spelling of 2102111212120 in words is "two trillion, one hundred two billion, one hundred eleven million, two hundred twelve thousand, one hundred twenty".