111322220231 has 4 divisors (see below), whose sum is σ = 111494279952. Its totient is φ = 111150160512.

The previous prime is 111322220209. The next prime is 111322220263. The reversal of 111322220231 is 132022223111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132022223111 = 23 ⋅5740096657.

It is a cyclic number.

It is not a de Polignac number, because 111322220231 - 2¹⁰ = 111322219207 is a prime.

It is a super-2 number, since 2×111322220231² (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 (111322220281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86028890 + ... + 86030183.

It is an arithmetic number, because the mean of its divisors is an integer number (27873569988).

Almost surely, 2^111322220231 is an apocalyptic number.

111322220231 is a deficient number, since it is larger than the sum of its proper divisors (172059721).

111322220231 is an equidigital number, since it uses as much as digits as its factorization.

111322220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172059720.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 111322220231 its reverse (132022223111), we get a palindrome (243344443342).

The spelling of 111322220231 in words is "one hundred eleven billion, three hundred twenty-two million, two hundred twenty thousand, two hundred thirty-one".