122245513 has 4 divisors (see below), whose sum is σ = 131649028. Its totient is φ = 112842000.

The previous prime is 122245499. The next prime is 122245549. The reversal of 122245513 is 315542221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315542221 = 23 ⋅13719227.

It can be written as a sum of positive squares in 2 ways, for example, as 31843449 + 90402064 = 5643^2 + 9508^2 .

It is a cyclic number.

It is not a de Polignac number, because 122245513 - 2⁵ = 122245481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122245553) 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, 4701738 + ... + 4701763.

It is an arithmetic number, because the mean of its divisors is an integer number (32912257).

Almost surely, 2^122245513 is an apocalyptic number.

122245513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

122245513 is a deficient number, since it is larger than the sum of its proper divisors (9403515).

122245513 is an equidigital number, since it uses as much as digits as its factorization.

122245513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9403514.

The product of its digits is 2400, while the sum is 25.

The square root of 122245513 is about 11056.4692827322. The cubic root of 122245513 is about 496.3000387758.

Adding to 122245513 its reverse (315542221), we get a palindrome (437787734).

The spelling of 122245513 in words is "one hundred twenty-two million, two hundred forty-five thousand, five hundred thirteen".