10021700900 has 18 divisors (see below), whose sum is σ = 21747091170. Its totient is φ = 4008680320.

The previous prime is 10021700893. The next prime is 10021700933. The reversal of 10021700900 is 900712001.

It can be written as a sum of positive squares in 3 ways, for example, as 1290496 + 10020410404 = 1136^2 + 100102^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50108405 + ... + 50108604.

Almost surely, 2^10021700900 is an apocalyptic number.

10021700900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021700900 is an abundant number, since it is smaller than the sum of its proper divisors (11725390270).

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

10021700900 is a wasteful number, since it uses less digits than its factorization.

10021700900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100217023 (or 100217016 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

The spelling of 10021700900 in words is "ten billion, twenty-one million, seven hundred thousand, nine hundred".