111231232013233 has 4 divisors (see below), whose sum is σ = 111231354047220. Its totient is φ = 111231109979248.

The previous prime is 111231232013203. The next prime is 111231232013243. The reversal of 111231232013233 is 332310232132111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74249362875249 + 36981869137984 = 8616807^2 + 6081272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111231232013233 is a prime.

It is a super-2 number, since 2×111231232013233² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111231232013203) 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, 59639410 + ... + 61476187.

It is an arithmetic number, because the mean of its divisors is an integer number (27807838511805).

Almost surely, 2^{111231232013233} is an apocalyptic number.

It is an amenable number.

111231232013233 is a deficient number, since it is larger than the sum of its proper divisors (122033987).

111231232013233 is an equidigital number, since it uses as much as digits as its factorization.

111231232013233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122033986.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 111231232013233 its reverse (332310232132111), we get a palindrome (443541464145344).

The spelling of 111231232013233 in words is "one hundred eleven trillion, two hundred thirty-one billion, two hundred thirty-two million, thirteen thousand, two hundred thirty-three".