22138225177 has 2 divisors, whose sum is σ = 22138225178. Its totient is φ = 22138225176.

The previous prime is 22138225171. The next prime is 22138225211. The reversal of 22138225177 is 77152283122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21169086016 + 969139161 = 145496^2 + 31131^2 .

It is a cyclic number.

It is not a de Polignac number, because 22138225177 - 2³ = 22138225169 is a prime.

It is not a weakly prime, because it can be changed into another prime (22138225171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11069112588 + 11069112589.

It is an arithmetic number, because the mean of its divisors is an integer number (11069112589).

Almost surely, 2^22138225177 is an apocalyptic number.

It is an amenable number.

22138225177 is a deficient number, since it is larger than the sum of its proper divisors (1).

22138225177 is an equidigital number, since it uses as much as digits as its factorization.

22138225177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The spelling of 22138225177 in words is "twenty-two billion, one hundred thirty-eight million, two hundred twenty-five thousand, one hundred seventy-seven".