122345581 has 2 divisors, whose sum is σ = 122345582. Its totient is φ = 122345580.

The previous prime is 122345537. The next prime is 122345609. The reversal of 122345581 is 185543221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122301481 + 44100 = 11059^2 + 210^2 .

It is a cyclic number.

It is not a de Polignac number, because 122345581 - 2¹⁷ = 122214509 is a prime.

It is a super-2 number, since 2×122345581² = 29936882380455122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122345281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61172790 + 61172791.

It is an arithmetic number, because the mean of its divisors is an integer number (61172791).

Almost surely, 2^122345581 is an apocalyptic number.

It is an amenable number.

122345581 is a deficient number, since it is larger than the sum of its proper divisors (1).

122345581 is an equidigital number, since it uses as much as digits as its factorization.

122345581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 31.

The square root of 122345581 is about 11060.9936714565. The cubic root of 122345581 is about 496.4354226328.

The spelling of 122345581 in words is "one hundred twenty-two million, three hundred forty-five thousand, five hundred eighty-one".