100021101999 has 32 divisors (see below), whose sum is σ = 168573350400. Its totient is φ = 51332476032.

The previous prime is 100021101989. The next prime is 100021102009. The reversal of 100021101999 is 999101120001.

It is an interprime number because it is at equal distance from previous prime (100021101989) and next prime (100021102009).

It is not a de Polignac number, because 100021101999 - 2¹⁷ = 100020970927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021101979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4940949 + ... + 4961150.

It is an arithmetic number, because the mean of its divisors is an integer number (5267917200).

Almost surely, 2^100021101999 is an apocalyptic number.

100021101999 is a deficient number, since it is larger than the sum of its proper divisors (68552248401).

100021101999 is a wasteful number, since it uses less digits than its factorization.

100021101999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9902159.

The product of its (nonzero) digits is 1458, while the sum is 33.

The spelling of 100021101999 in words is "one hundred billion, twenty-one million, one hundred one thousand, nine hundred ninety-nine".