111002021999 has 16 divisors (see below), whose sum is σ = 127138446720. Its totient is φ = 95977025760.

The previous prime is 111002021993. The next prime is 111002022007. The reversal of 111002021999 is 999120200111.

It is not a de Polignac number, because 111002021999 - 2²⁰ = 111000973423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002021993) 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, 2575409 + ... + 2618154.

It is an arithmetic number, because the mean of its divisors is an integer number (7946152920).

Almost surely, 2^111002021999 is an apocalyptic number.

111002021999 is a deficient number, since it is larger than the sum of its proper divisors (16136424721).

111002021999 is a wasteful number, since it uses less digits than its factorization.

111002021999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193670.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 111002021999 in words is "one hundred eleven billion, two million, twenty-one thousand, nine hundred ninety-nine".