111012111231 has 8 divisors (see below), whose sum is σ = 169161312384. Its totient is φ = 63435492120.

The previous prime is 111012111209. The next prime is 111012111233. The reversal of 111012111231 is 132111210111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111012111231 - 2⁷ = 111012111103 is a prime.

It is a super-2 number, since 2×111012111231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111012111231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012111233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2643145485 + ... + 2643145526.

It is an arithmetic number, because the mean of its divisors is an integer number (21145164048).

Almost surely, 2^111012111231 is an apocalyptic number.

111012111231 is a deficient number, since it is larger than the sum of its proper divisors (58149201153).

111012111231 is an equidigital number, since it uses as much as digits as its factorization.

111012111231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286291021.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 111012111231 its reverse (132111210111), we get a palindrome (243123321342).

The spelling of 111012111231 in words is "one hundred eleven billion, twelve million, one hundred eleven thousand, two hundred thirty-one".