122440213 has 4 divisors (see below), whose sum is σ = 139931680. Its totient is φ = 104948748.

The previous prime is 122440211. The next prime is 122440249. The reversal of 122440213 is 312044221.

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 122440213 - 2¹ = 122440211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122440211) 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, 8745723 + ... + 8745736.

It is an arithmetic number, because the mean of its divisors is an integer number (34982920).

Almost surely, 2^122440213 is an apocalyptic number.

It is an amenable number.

122440213 is a deficient number, since it is larger than the sum of its proper divisors (17491467).

122440213 is an equidigital number, since it uses as much as digits as its factorization.

122440213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17491466.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 122440213 is about 11065.2705796108. The cubic root of 122440213 is about 496.5633841261.

Adding to 122440213 its reverse (312044221), we get a palindrome (434484434).

The spelling of 122440213 in words is "one hundred twenty-two million, four hundred forty thousand, two hundred thirteen".