2100560020 has 24 divisors (see below), whose sum is σ = 4750497864. Its totient is φ = 775591296.

The previous prime is 2100560017. The next prime is 2100560039. The reversal of 2100560020 is 200650012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 364504464 + 1736055556 = 19092^2 + 41666^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2100559976 and 2100560003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4039279 + ... + 4039798.

It is an arithmetic number, because the mean of its divisors is an integer number (197937411).

Almost surely, 2^2100560020 is an apocalyptic number.

2100560020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100560020 is an abundant number, since it is smaller than the sum of its proper divisors (2649937844).

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

2100560020 is a wasteful number, since it uses less digits than its factorization.

2100560020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8079099 (or 8079097 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2100560020 is about 45831.8668613880. The cubic root of 2100560020 is about 1280.6929881946.

The spelling of 2100560020 in words is "two billion, one hundred million, five hundred sixty thousand, twenty".