122513217 has 16 divisors (see below), whose sum is σ = 166533120. Its totient is φ = 80099712.

The previous prime is 122513213. The next prime is 122513219. The reversal of 122513217 is 712315221.

It is not a de Polignac number, because 122513217 - 2² = 122513213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122513213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32103 + ... + 35715.

It is an arithmetic number, because the mean of its divisors is an integer number (10408320).

Almost surely, 2^122513217 is an apocalyptic number.

It is an amenable number.

122513217 is a deficient number, since it is larger than the sum of its proper divisors (44019903).

122513217 is a wasteful number, since it uses less digits than its factorization.

122513217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832.

The product of its digits is 840, while the sum is 24.

The square root of 122513217 is about 11068.5688776824. The cubic root of 122513217 is about 496.6620551699.

Adding to 122513217 its reverse (712315221), we get a palindrome (834828438).

The spelling of 122513217 in words is "one hundred twenty-two million, five hundred thirteen thousand, two hundred seventeen".