2120911912020 has 72 divisors (see below), whose sum is σ = 6527500816032. Its totient is φ = 514160461760.

The previous prime is 2120911912001. The next prime is 2120911912033. The reversal of 2120911912020 is 202191190212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146061054 + ... + 146075573.

It is an arithmetic number, because the mean of its divisors is an integer number (90659733556).

Almost surely, 2^{2120911912020} is an apocalyptic number.

2120911912020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120911912020 is an abundant number, since it is smaller than the sum of its proper divisors (4406588904012).

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

2120911912020 is a wasteful number, since it uses less digits than its factorization.

2120911912020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292136661 (or 292136648 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 2120911912020 in words is "two trillion, one hundred twenty billion, nine hundred eleven million, nine hundred twelve thousand, twenty".