100000021329 has 24 divisors (see below), whose sum is σ = 155579004672. Its totient is φ = 61529211360.

The previous prime is 100000021307. The next prime is 100000021339. The reversal of 100000021329 is 923120000001.

It is a happy number.

It is not a de Polignac number, because 100000021329 - 2⁷ = 100000021201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100000021339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 761344 + ... + 882974.

It is an arithmetic number, because the mean of its divisors is an integer number (6482458528).

Almost surely, 2^100000021329 is an apocalyptic number.

It is an amenable number.

100000021329 is a deficient number, since it is larger than the sum of its proper divisors (55578983343).

100000021329 is a wasteful number, since it uses less digits than its factorization.

100000021329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128677 (or 128674 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The spelling of 100000021329 in words is "one hundred billion, twenty-one thousand, three hundred twenty-nine".