2101120501056 has 56 divisors (see below), whose sum is σ = 5626193191584. Its totient is φ = 691935260160.

The previous prime is 2101120501043. The next prime is 2101120501057. The reversal of 2101120501056 is 6501050211012.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101120501057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65907775 + ... + 65939646.

It is an arithmetic number, because the mean of its divisors is an integer number (100467735564).

Almost surely, 2^{2101120501056} is an apocalyptic number.

It is an amenable number.

2101120501056 is an abundant number, since it is smaller than the sum of its proper divisors (3525072690528).

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

2101120501056 is a wasteful number, since it uses less digits than its factorization.

2101120501056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131847519 (or 131847509 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 24.

Adding to 2101120501056 its reverse (6501050211012), we get a palindrome (8602170712068).

The spelling of 2101120501056 in words is "two trillion, one hundred one billion, one hundred twenty million, five hundred one thousand, fifty-six".