138227111171 has 2 divisors, whose sum is σ = 138227111172. Its totient is φ = 138227111170.

The previous prime is 138227111107. The next prime is 138227111179. The reversal of 138227111171 is 171111722831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138227111171 - 2⁶ = 138227111107 is a prime.

It is not a weakly prime, because it can be changed into another prime (138227111179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69113555585 + 69113555586.

It is an arithmetic number, because the mean of its divisors is an integer number (69113555586).

Almost surely, 2^138227111171 is an apocalyptic number.

138227111171 is a deficient number, since it is larger than the sum of its proper divisors (1).

138227111171 is an equidigital number, since it uses as much as digits as its factorization.

138227111171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 35.

The spelling of 138227111171 in words is "one hundred thirty-eight billion, two hundred twenty-seven million, one hundred eleven thousand, one hundred seventy-one".