111102020121139 has 2 divisors, whose sum is σ = 111102020121140. Its totient is φ = 111102020121138.

The previous prime is 111102020121107. The next prime is 111102020121143. The reversal of 111102020121139 is 931121020201111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111102020121139 - 2⁵ = 111102020121107 is a prime.

It is not a weakly prime, because it can be changed into another prime (111102020121179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55551010060569 + 55551010060570.

It is an arithmetic number, because the mean of its divisors is an integer number (55551010060570).

Almost surely, 2^{111102020121139} is an apocalyptic number.

111102020121139 is a deficient number, since it is larger than the sum of its proper divisors (1).

111102020121139 is an equidigital number, since it uses as much as digits as its factorization.

111102020121139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 111102020121139 in words is "one hundred eleven trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, one hundred thirty-nine".