122521313 has 4 divisors (see below), whose sum is σ = 123666480. Its totient is φ = 121376148.

The previous prime is 122521309. The next prime is 122521349. The reversal of 122521313 is 313125221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122521313 - 2² = 122521309 is a prime.

It is a super-2 number, since 2×122521313² = 30022944278487938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122521513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572423 + ... + 572636.

It is an arithmetic number, because the mean of its divisors is an integer number (30916620).

Almost surely, 2^122521313 is an apocalyptic number.

It is an amenable number.

122521313 is a deficient number, since it is larger than the sum of its proper divisors (1145167).

122521313 is a wasteful number, since it uses less digits than its factorization.

122521313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145166.

The product of its digits is 360, while the sum is 20.

The square root of 122521313 is about 11068.9345919108. The cubic root of 122521313 is about 496.6729951798.

Adding to 122521313 its reverse (313125221), we get a palindrome (435646534).

The spelling of 122521313 in words is "one hundred twenty-two million, five hundred twenty-one thousand, three hundred thirteen".