111255333334921 has 2 divisors, whose sum is σ = 111255333334922. Its totient is φ = 111255333334920.

The previous prime is 111255333334877. The next prime is 111255333334961. The reversal of 111255333334921 is 129433333552111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90710290398025 + 20545042936896 = 9524195^2 + 4532664^2 .

It is a cyclic number.

It is not a de Polignac number, because 111255333334921 - 2⁷ = 111255333334793 is a prime.

It is not a weakly prime, because it can be changed into another prime (111255333334961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55627666667460 + 55627666667461.

It is an arithmetic number, because the mean of its divisors is an integer number (55627666667461).

Almost surely, 2^{111255333334921} is an apocalyptic number.

It is an amenable number.

111255333334921 is a deficient number, since it is larger than the sum of its proper divisors (1).

111255333334921 is an equidigital number, since it uses as much as digits as its factorization.

111255333334921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 46.

The spelling of 111255333334921 in words is "one hundred eleven trillion, two hundred fifty-five billion, three hundred thirty-three million, three hundred thirty-four thousand, nine hundred twenty-one".