111100123331 has 2 divisors, whose sum is σ = 111100123332. Its totient is φ = 111100123330.

The previous prime is 111100123319. The next prime is 111100123361. The reversal of 111100123331 is 133321001111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111100123331 is a prime.

It is a super-2 number, since 2×111100123331² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (111100123361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550061665 + 55550061666.

It is an arithmetic number, because the mean of its divisors is an integer number (55550061666).

Almost surely, 2^111100123331 is an apocalyptic number.

111100123331 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100123331 is an equidigital number, since it uses as much as digits as its factorization.

111100123331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 111100123331 its reverse (133321001111), we get a palindrome (244421124442).

The spelling of 111100123331 in words is "one hundred eleven billion, one hundred million, one hundred twenty-three thousand, three hundred thirty-one".