122345281 has 2 divisors, whose sum is σ = 122345282. Its totient is φ = 122345280.

The previous prime is 122345269. The next prime is 122345309. The reversal of 122345281 is 182543221.

It is an a-pointer prime, because the next prime (122345309) can be obtained adding 122345281 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119159056 + 3186225 = 10916^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 122345281 - 2⁹ = 122344769 is a prime.

It is a super-2 number, since 2×122345281² = 29936735565937922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122345231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61172640 + 61172641.

It is an arithmetic number, because the mean of its divisors is an integer number (61172641).

Almost surely, 2^122345281 is an apocalyptic number.

It is an amenable number.

122345281 is a deficient number, since it is larger than the sum of its proper divisors (1).

122345281 is an equidigital number, since it uses as much as digits as its factorization.

122345281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 28.

The square root of 122345281 is about 11060.9801102796. The cubic root of 122345281 is about 496.4350168675.

The spelling of 122345281 in words is "one hundred twenty-two million, three hundred forty-five thousand, two hundred eighty-one".