122212643 has 16 divisors (see below), whose sum is σ = 151041024. Its totient is φ = 96489600.

The previous prime is 122212637. The next prime is 122212667. The reversal of 122212643 is 346212221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122212643 - 2¹⁰ = 122211619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122212043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5333 + ... + 16518.

It is an arithmetic number, because the mean of its divisors is an integer number (9440064).

Almost surely, 2^122212643 is an apocalyptic number.

122212643 is a deficient number, since it is larger than the sum of its proper divisors (28828381).

122212643 is a wasteful number, since it uses less digits than its factorization.

122212643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21922.

The product of its digits is 1152, while the sum is 23.

The square root of 122212643 is about 11054.9827227364. The cubic root of 122212643 is about 496.2555522223.

Adding to 122212643 its reverse (346212221), we get a palindrome (468424864).

The spelling of 122212643 in words is "one hundred twenty-two million, two hundred twelve thousand, six hundred forty-three".