10109921000 has 32 divisors (see below), whose sum is σ = 23657217480. Its totient is φ = 4043968000.

The previous prime is 10109920967. The next prime is 10109921023. The reversal of 10109921000 is 12990101.

It can be written as a sum of positive squares in 4 ways, for example, as 1511809924 + 8598111076 = 38882^2 + 92726^2 .

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, 5053961 + ... + 5055960.

Almost surely, 2^10109921000 is an apocalyptic number.

10109921000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10109921000 is an abundant number, since it is smaller than the sum of its proper divisors (13547296480).

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

10109921000 is a wasteful number, since it uses less digits than its factorization.

10109921000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10109942 (or 10109928 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 23.

The spelling of 10109921000 in words is "ten billion, one hundred nine million, nine hundred twenty-one thousand".