111110011220231 has 2 divisors, whose sum is σ = 111110011220232. Its totient is φ = 111110011220230.

The previous prime is 111110011220203. The next prime is 111110011220233. The reversal of 111110011220231 is 132022110011111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111110011220231 - 2¹⁸ = 111110010958087 is a prime.

It is a super-2 number, since 2×111110011220231² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 111110011220233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111110011220233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555005610115 + 55555005610116.

It is an arithmetic number, because the mean of its divisors is an integer number (55555005610116).

Almost surely, 2^{111110011220231} is an apocalyptic number.

111110011220231 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110011220231 is an equidigital number, since it uses as much as digits as its factorization.

111110011220231 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 17.

Adding to 111110011220231 its reverse (132022110011111), we get a palindrome (243132121231342).

The spelling of 111110011220231 in words is "one hundred eleven trillion, one hundred ten billion, eleven million, two hundred twenty thousand, two hundred thirty-one".