111210139 has 2 divisors, whose sum is σ = 111210140. Its totient is φ = 111210138.

The previous prime is 111210119. The next prime is 111210167. The reversal of 111210139 is 931012111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111210139 - 2²³ = 102821531 is a prime.

It is not a weakly prime, because it can be changed into another prime (111210119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605069 + 55605070.

It is an arithmetic number, because the mean of its divisors is an integer number (55605070).

Almost surely, 2^111210139 is an apocalyptic number.

111210139 is a deficient number, since it is larger than the sum of its proper divisors (1).

111210139 is an equidigital number, since it uses as much as digits as its factorization.

111210139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 111210139 is about 10545.6217929528. The cubic root of 111210139 is about 480.8926372900.

The spelling of 111210139 in words is "one hundred eleven million, two hundred ten thousand, one hundred thirty-nine".