122226121 has 2 divisors, whose sum is σ = 122226122. Its totient is φ = 122226120.

The previous prime is 122226119. The next prime is 122226151. The reversal of 122226121 is 121622221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111070521 + 11155600 = 10539^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 122226121 - 2¹ = 122226119 is a prime.

Together with 122226119, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122226101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61113060 + 61113061.

It is an arithmetic number, because the mean of its divisors is an integer number (61113061).

Almost surely, 2^122226121 is an apocalyptic number.

It is an amenable number.

122226121 is a deficient number, since it is larger than the sum of its proper divisors (1).

122226121 is an equidigital number, since it uses as much as digits as its factorization.

122226121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 122226121 is about 11055.5922953047. The cubic root of 122226121 is about 496.2737944334.

Adding to 122226121 its reverse (121622221), we get a palindrome (243848342).

The spelling of 122226121 in words is "one hundred twenty-two million, two hundred twenty-six thousand, one hundred twenty-one".