100000021002 has 32 divisors (see below), whose sum is σ = 228608120832. Its totient is φ = 28566854064.

The previous prime is 100000021001. The next prime is 100000021021. The reversal of 100000021002 is 200120000001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is not an unprimeable number, because it can be changed into a prime (100000021001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78723 + ... + 454089.

It is an arithmetic number, because the mean of its divisors is an integer number (7144003776).

Almost surely, 2^100000021002 is an apocalyptic number.

100000021002 is an abundant number, since it is smaller than the sum of its proper divisors (128608099830).

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

100000021002 is a wasteful number, since it uses less digits than its factorization.

100000021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381722.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 100000021002 its reverse (200120000001), we get a palindrome (300120021003).

The spelling of 100000021002 in words is "one hundred billion, twenty-one thousand, two".