111252220331 has 16 divisors (see below), whose sum is σ = 131972026368. Its totient is φ = 91773064800.

The previous prime is 111252220319. The next prime is 111252220333. The reversal of 111252220331 is 133022252111.

It is a cyclic number.

It is not a de Polignac number, because 111252220331 - 2³⁴ = 94072351147 is a prime.

It is a super-2 number, since 2×111252220331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111252220297 and 111252220306.

It is not an unprimeable number, because it can be changed into a prime (111252220333) 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, 1376975 + ... + 1455528.

It is an arithmetic number, because the mean of its divisors is an integer number (8248251648).

Almost surely, 2^111252220331 is an apocalyptic number.

111252220331 is a deficient number, since it is larger than the sum of its proper divisors (20719806037).

111252220331 is a wasteful number, since it uses less digits than its factorization.

111252220331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832722.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 111252220331 its reverse (133022252111), we get a palindrome (244274472442).

The spelling of 111252220331 in words is "one hundred eleven billion, two hundred fifty-two million, two hundred twenty thousand, three hundred thirty-one".