100020111989 has 16 divisors (see below), whose sum is σ = 115864560000. Its totient is φ = 84572489664.

The previous prime is 100020111943. The next prime is 100020112001. The reversal of 100020111989 is 989111020001.

It is a cyclic number.

It is not a de Polignac number, because 100020111989 - 2²⁴ = 100003334773 is a prime.

It is a super-2 number, since 2×100020111989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020114989) 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, 174614 + ... + 480135.

It is an arithmetic number, because the mean of its divisors is an integer number (7241535000).

Almost surely, 2^100020111989 is an apocalyptic number.

It is an amenable number.

100020111989 is a deficient number, since it is larger than the sum of its proper divisors (15844448011).

100020111989 is a wasteful number, since it uses less digits than its factorization.

100020111989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655052.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 100020111989 in words is "one hundred billion, twenty million, one hundred eleven thousand, nine hundred eighty-nine".