111023021999 has 8 divisors (see below), whose sum is σ = 116222625792. Its totient is φ = 105854461240.

The previous prime is 111023021987. The next prime is 111023022013. The reversal of 111023021999 is 999120320111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-111023021999 is a prime.

It is a super-2 number, since 2×111023021999² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111023021909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7753439 + ... + 7767744.

It is an arithmetic number, because the mean of its divisors is an integer number (14527828224).

Almost surely, 2^111023021999 is an apocalyptic number.

111023021999 is a deficient number, since it is larger than the sum of its proper divisors (5199603793).

111023021999 is a wasteful number, since it uses less digits than its factorization.

111023021999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15521517.

The product of its (nonzero) digits is 8748, while the sum is 38.

The spelling of 111023021999 in words is "one hundred eleven billion, twenty-three million, twenty-one thousand, nine hundred ninety-nine".