122243491 has 2 divisors, whose sum is σ = 122243492. Its totient is φ = 122243490.

The previous prime is 122243489. The next prime is 122243503. The reversal of 122243491 is 194342221.

It is a weak prime.

It is an emirp because it is prime and its reverse (194342221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122243491 - 2¹ = 122243489 is a prime.

Together with 122243489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (122243291) 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 as a sum of consecutive naturals, namely, 61121745 + 61121746.

It is an arithmetic number, because the mean of its divisors is an integer number (61121746).

Almost surely, 2^122243491 is an apocalyptic number.

122243491 is a deficient number, since it is larger than the sum of its proper divisors (1).

122243491 is an equidigital number, since it uses as much as digits as its factorization.

122243491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 122243491 is about 11056.3778426752. The cubic root of 122243491 is about 496.2973024130.

The spelling of 122243491 in words is "one hundred twenty-two million, two hundred forty-three thousand, four hundred ninety-one".