122339281 has 4 divisors (see below), whose sum is σ = 123160500. Its totient is φ = 121518064.

The previous prime is 122339263. The next prime is 122339291. The reversal of 122339281 is 182933221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9979281 + 112360000 = 3159^2 + 10600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122339281 is a prime.

It is a super-2 number, since 2×122339281² = 29933799351193922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122339291) 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 in 3 ways as a sum of consecutive naturals, for example, 410386 + ... + 410683.

It is an arithmetic number, because the mean of its divisors is an integer number (30790125).

Almost surely, 2^122339281 is an apocalyptic number.

It is an amenable number.

122339281 is a deficient number, since it is larger than the sum of its proper divisors (821219).

122339281 is an equidigital number, since it uses as much as digits as its factorization.

122339281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821218.

The product of its digits is 5184, while the sum is 31.

The square root of 122339281 is about 11060.7088832498. The cubic root of 122339281 is about 496.4269014236.

It can be divided in two parts, 1223 and 39281, that added together give a palindrome (40504).

The spelling of 122339281 in words is "one hundred twenty-two million, three hundred thirty-nine thousand, two hundred eighty-one".