111441220023 has 16 divisors (see below), whose sum is σ = 169981873920. Its totient is φ = 63618191616.

The previous prime is 111441219979. The next prime is 111441220103. The reversal of 111441220023 is 320022144111.

It is not a de Polignac number, because 111441220023 - 2²⁴ = 111424442807 is a prime.

It is a super-2 number, since 2×111441220023² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111441260023) 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, 2582490 + ... + 2625287.

It is an arithmetic number, because the mean of its divisors is an integer number (10623867120).

Almost surely, 2^111441220023 is an apocalyptic number.

111441220023 is a deficient number, since it is larger than the sum of its proper divisors (58540653897).

111441220023 is a wasteful number, since it uses less digits than its factorization.

111441220023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208806.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 111441220023 its reverse (320022144111), we get a palindrome (431463364134).

The spelling of 111441220023 in words is "one hundred eleven billion, four hundred forty-one million, two hundred twenty thousand, twenty-three".