111022111231 has 2 divisors, whose sum is σ = 111022111232. Its totient is φ = 111022111230.

The previous prime is 111022111229. The next prime is 111022111243. The reversal of 111022111231 is 132111220111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111022111231 - 2¹ = 111022111229 is a prime.

It is a super-2 number, since 2×111022111231² (a number of 23 digits) contains 22 as substring.

Together with 111022111229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111022111631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511055615 + 55511055616.

It is an arithmetic number, because the mean of its divisors is an integer number (55511055616).

Almost surely, 2^111022111231 is an apocalyptic number.

111022111231 is a deficient number, since it is larger than the sum of its proper divisors (1).

111022111231 is an equidigital number, since it uses as much as digits as its factorization.

111022111231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111022111231 its reverse (132111220111), we get a palindrome (243133331342).

The spelling of 111022111231 in words is "one hundred eleven billion, twenty-two million, one hundred eleven thousand, two hundred thirty-one".