122213291 has 2 divisors, whose sum is σ = 122213292. Its totient is φ = 122213290.

The previous prime is 122213281. The next prime is 122213303. The reversal of 122213291 is 192312221.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (192312221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122213291 - 2¹⁸ = 121951147 is a prime.

It is not a weakly prime, because it can be changed into another prime (122213261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61106645 + 61106646.

It is an arithmetic number, because the mean of its divisors is an integer number (61106646).

Almost surely, 2^122213291 is an apocalyptic number.

122213291 is a deficient number, since it is larger than the sum of its proper divisors (1).

122213291 is an equidigital number, since it uses as much as digits as its factorization.

122213291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 122213291 is about 11055.0120307488. The cubic root of 122213291 is about 496.2564293084.

The spelling of 122213291 in words is "one hundred twenty-two million, two hundred thirteen thousand, two hundred ninety-one".