111201321023 has 16 divisors (see below), whose sum is σ = 120147216000. Its totient is φ = 102311665920.

The previous prime is 111201321013. The next prime is 111201321037. The reversal of 111201321023 is 320123102111.

It is a cyclic number.

It is not a de Polignac number, because 111201321023 - 2¹⁸ = 111201058879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111201320992 and 111201321010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201321013) 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, 20146058 + ... + 20151576.

It is an arithmetic number, because the mean of its divisors is an integer number (7509201000).

Almost surely, 2^111201321023 is an apocalyptic number.

111201321023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111201321023 is a deficient number, since it is larger than the sum of its proper divisors (8945894977).

111201321023 is a wasteful number, since it uses less digits than its factorization.

111201321023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10322.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111201321023 its reverse (320123102111), we get a palindrome (431324423134).

The spelling of 111201321023 in words is "one hundred eleven billion, two hundred one million, three hundred twenty-one thousand, twenty-three".