122858217 has 6 divisors (see below), whose sum is σ = 177461882. Its totient is φ = 81905472.

The previous prime is 122858207. The next prime is 122858221. The reversal of 122858217 is 712858221.

It can be written as a sum of positive squares in only one way, i.e., 109746576 + 13111641 = 10476^2 + 3621^2 .

It is not a de Polignac number, because 122858217 - 2¹⁴ = 122841833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122858207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6825448 + ... + 6825465.

Almost surely, 2^122858217 is an apocalyptic number.

It is an amenable number.

122858217 is a deficient number, since it is larger than the sum of its proper divisors (54603665).

122858217 is a wasteful number, since it uses less digits than its factorization.

122858217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13650919 (or 13650916 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 122858217 is about 11084.1425920095. The cubic root of 122858217 is about 497.1278221134.

It can be divided in two parts, 12285 and 8217, that added together give a palindrome (20502).

The spelling of 122858217 in words is "one hundred twenty-two million, eight hundred fifty-eight thousand, two hundred seventeen".