122732321 has 8 divisors (see below), whose sum is σ = 127525800. Its totient is φ = 117976320.

The previous prime is 122732303. The next prime is 122732339. The reversal of 122732321 is 123237221.

It is an interprime number because it is at equal distance from previous prime (122732303) and next prime (122732339).

It can be written as a sum of positive squares in 4 ways, for example, as 80013025 + 42719296 = 8945^2 + 6536^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122732321 - 2²⁶ = 55623457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122732371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600 + ... + 15881.

It is an arithmetic number, because the mean of its divisors is an integer number (15940725).

Almost surely, 2^122732321 is an apocalyptic number.

It is an amenable number.

122732321 is a deficient number, since it is larger than the sum of its proper divisors (4793479).

122732321 is a wasteful number, since it uses less digits than its factorization.

122732321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18739.

The product of its digits is 1008, while the sum is 23.

The square root of 122732321 is about 11078.4620322498. The cubic root of 122732321 is about 496.9579574896.

Adding to 122732321 its reverse (123237221), we get a palindrome (245969542).

The spelling of 122732321 in words is "one hundred twenty-two million, seven hundred thirty-two thousand, three hundred twenty-one".