111110997923 has 2 divisors, whose sum is σ = 111110997924. Its totient is φ = 111110997922.

The previous prime is 111110997913. The next prime is 111110997929. The reversal of 111110997923 is 329799011111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111110997923 - 2⁶ = 111110997859 is a prime.

It is not a weakly prime, because it can be changed into another prime (111110997929) 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, 55555498961 + 55555498962.

It is an arithmetic number, because the mean of its divisors is an integer number (55555498962).

Almost surely, 2^111110997923 is an apocalyptic number.

111110997923 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110997923 is an equidigital number, since it uses as much as digits as its factorization.

111110997923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 44.

The spelling of 111110997923 in words is "one hundred eleven billion, one hundred ten million, nine hundred ninety-seven thousand, nine hundred twenty-three".