111102120391 has 2 divisors, whose sum is σ = 111102120392. Its totient is φ = 111102120390.

The previous prime is 111102120343. The next prime is 111102120403. The reversal of 111102120391 is 193021201111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111102120391 - 2³⁵ = 76742382023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111102120491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55551060195 + 55551060196.

It is an arithmetic number, because the mean of its divisors is an integer number (55551060196).

Almost surely, 2^111102120391 is an apocalyptic number.

111102120391 is a deficient number, since it is larger than the sum of its proper divisors (1).

111102120391 is an equidigital number, since it uses as much as digits as its factorization.

111102120391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 111102120391 in words is "one hundred eleven billion, one hundred two million, one hundred twenty thousand, three hundred ninety-one".