122245213 has 4 divisors (see below), whose sum is σ = 122426460. Its totient is φ = 122063968.

The previous prime is 122245199. The next prime is 122245217. The reversal of 122245213 is 312542221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113167044 + 9078169 = 10638^2 + 3013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122245213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122245217) 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, 89608 + ... + 90961.

It is an arithmetic number, because the mean of its divisors is an integer number (30606615).

Almost surely, 2^122245213 is an apocalyptic number.

It is an amenable number.

122245213 is a deficient number, since it is larger than the sum of its proper divisors (181247).

122245213 is an equidigital number, since it uses as much as digits as its factorization.

122245213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181246.

The product of its digits is 960, while the sum is 22.

The square root of 122245213 is about 11056.4557160059. The cubic root of 122245213 is about 496.2996327891.

Adding to 122245213 its reverse (312542221), we get a palindrome (434787434).

The spelling of 122245213 in words is "one hundred twenty-two million, two hundred forty-five thousand, two hundred thirteen".