111145921279 has 2 divisors, whose sum is σ = 111145921280. Its totient is φ = 111145921278.

The previous prime is 111145921163. The next prime is 111145921283. The reversal of 111145921279 is 972129541111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111145921279 - 2¹⁹ = 111145396991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111145921879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55572960639 + 55572960640.

It is an arithmetic number, because the mean of its divisors is an integer number (55572960640).

Almost surely, 2^111145921279 is an apocalyptic number.

111145921279 is a deficient number, since it is larger than the sum of its proper divisors (1).

111145921279 is an equidigital number, since it uses as much as digits as its factorization.

111145921279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 43.

The spelling of 111145921279 in words is "one hundred eleven billion, one hundred forty-five million, nine hundred twenty-one thousand, two hundred seventy-nine".