111123133019 has 2 divisors, whose sum is σ = 111123133020. Its totient is φ = 111123133018.

The previous prime is 111123132961. The next prime is 111123133039. The reversal of 111123133019 is 910331321111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111123133019 is a prime.

It is a super-2 number, since 2×111123133019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111123133039) 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 as a sum of consecutive naturals, namely, 55561566509 + 55561566510.

It is an arithmetic number, because the mean of its divisors is an integer number (55561566510).

Almost surely, 2^111123133019 is an apocalyptic number.

111123133019 is a deficient number, since it is larger than the sum of its proper divisors (1).

111123133019 is an equidigital number, since it uses as much as digits as its factorization.

111123133019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The spelling of 111123133019 in words is "one hundred eleven billion, one hundred twenty-three million, one hundred thirty-three thousand, nineteen".