111508675921 has 2 divisors, whose sum is σ = 111508675922. Its totient is φ = 111508675920.

The previous prime is 111508675871. The next prime is 111508675931. The reversal of 111508675921 is 129576805111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68798667025 + 42710008896 = 262295^2 + 206664^2 .

It is a cyclic number.

It is not a de Polignac number, because 111508675921 - 2³³ = 102918741329 is a prime.

It is not a weakly prime, because it can be changed into another prime (111508675931) 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, 55754337960 + 55754337961.

It is an arithmetic number, because the mean of its divisors is an integer number (55754337961).

Almost surely, 2^111508675921 is an apocalyptic number.

It is an amenable number.

111508675921 is a deficient number, since it is larger than the sum of its proper divisors (1).

111508675921 is an equidigital number, since it uses as much as digits as its factorization.

111508675921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 46.

The spelling of 111508675921 in words is "one hundred eleven billion, five hundred eight million, six hundred seventy-five thousand, nine hundred twenty-one".