10021899930 has 48 divisors (see below), whose sum is σ = 27979512480. Its totient is φ = 2290719648.

The previous prime is 10021899919. The next prime is 10021899983. The reversal of 10021899930 is 3999812001.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3407340 + ... + 3410279.

It is an arithmetic number, because the mean of its divisors is an integer number (582906510).

Almost surely, 2^10021899930 is an apocalyptic number.

10021899930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10021899930 is an abundant number, since it is smaller than the sum of its proper divisors (17957612550).

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

10021899930 is a wasteful number, since it uses less digits than its factorization.

10021899930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6817643 (or 6817636 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 42.

The spelling of 10021899930 in words is "ten billion, twenty-one million, eight hundred ninety-nine thousand, nine hundred thirty".