139225211 has 2 divisors, whose sum is σ = 139225212. Its totient is φ = 139225210.

The previous prime is 139225199. The next prime is 139225231. The reversal of 139225211 is 112522931.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139225211 - 2¹⁰ = 139224187 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139225231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69612605 + 69612606.

It is an arithmetic number, because the mean of its divisors is an integer number (69612606).

Almost surely, 2^139225211 is an apocalyptic number.

139225211 is a deficient number, since it is larger than the sum of its proper divisors (1).

139225211 is an equidigital number, since it uses as much as digits as its factorization.

139225211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 139225211 is about 11799.3733308172. The cubic root of 139225211 is about 518.2897597689.

The spelling of 139225211 in words is "one hundred thirty-nine million, two hundred twenty-five thousand, two hundred eleven".