100001121999 has 32 divisors (see below), whose sum is σ = 138124953600. Its totient is φ = 64305964800.

The previous prime is 100001121991. The next prime is 100001122003. The reversal of 100001121999 is 999121100001.

It is not a de Polignac number, because 100001121999 - 2³ = 100001121991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001121991) 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, 6198954 + ... + 6215064.

It is an arithmetic number, because the mean of its divisors is an integer number (4316404800).

Almost surely, 2^100001121999 is an apocalyptic number.

100001121999 is a deficient number, since it is larger than the sum of its proper divisors (38123831601).

100001121999 is a wasteful number, since it uses less digits than its factorization.

100001121999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16631.

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

The spelling of 100001121999 in words is "one hundred billion, one million, one hundred twenty-one thousand, nine hundred ninety-nine".