122621313 has 4 divisors (see below), whose sum is σ = 163495088. Its totient is φ = 81747540.

The previous prime is 122621311. The next prime is 122621321. The reversal of 122621313 is 313126221.

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 not a de Polignac number, because 122621313 - 2¹ = 122621311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122621313.

It is not an unprimeable number, because it can be changed into a prime (122621311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20436883 + ... + 20436888.

It is an arithmetic number, because the mean of its divisors is an integer number (40873772).

Almost surely, 2^122621313 is an apocalyptic number.

It is an amenable number.

122621313 is a deficient number, since it is larger than the sum of its proper divisors (40873775).

122621313 is an equidigital number, since it uses as much as digits as its factorization.

122621313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40873774.

The product of its digits is 432, while the sum is 21.

The square root of 122621313 is about 11073.4508171572. The cubic root of 122621313 is about 496.8080840387.

Adding to 122621313 its reverse (313126221), we get a palindrome (435747534).

The spelling of 122621313 in words is "one hundred twenty-two million, six hundred twenty-one thousand, three hundred thirteen".