100021012002 has 16 divisors (see below), whose sum is σ = 222268915680. Its totient is φ = 33340337316.

The previous prime is 100021012001. The next prime is 100021012009. The reversal of 100021012002 is 200210120001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100021012001) 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, 926120428 + ... + 926120535.

It is an arithmetic number, because the mean of its divisors is an integer number (13891807230).

Almost surely, 2^100021012002 is an apocalyptic number.

100021012002 is an abundant number, since it is smaller than the sum of its proper divisors (122247903678).

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

100021012002 is a wasteful number, since it uses less digits than its factorization.

100021012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852240974 (or 1852240968 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100021012002 its reverse (200210120001), we get a palindrome (300231132003).

The spelling of 100021012002 in words is "one hundred billion, twenty-one million, twelve thousand, two".