10201021980 has 24 divisors (see below), whose sum is σ = 28562861712. Its totient is φ = 2720272512.

The previous prime is 10201021979. The next prime is 10201021981. The reversal of 10201021980 is 8912010201.

It is an interprime number because it is at equal distance from previous prime (10201021979) and next prime (10201021981).

It is a self number, because there is not a number n which added to its sum of digits gives 10201021980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201021981) 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, 85008457 + ... + 85008576.

It is an arithmetic number, because the mean of its divisors is an integer number (1190119238).

Almost surely, 2^10201021980 is an apocalyptic number.

10201021980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10201021980 is an abundant number, since it is smaller than the sum of its proper divisors (18361839732).

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

10201021980 is a wasteful number, since it uses less digits than its factorization.

10201021980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170017045 (or 170017043 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 10201021980 in words is "ten billion, two hundred one million, twenty-one thousand, nine hundred eighty".