122215493 has 2 divisors, whose sum is σ = 122215494. Its totient is φ = 122215492.

The previous prime is 122215469. The next prime is 122215501. The reversal of 122215493 is 394512221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121506529 + 708964 = 11023^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 122215493 - 2¹⁶ = 122149957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122215433) 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, 61107746 + 61107747.

It is an arithmetic number, because the mean of its divisors is an integer number (61107747).

Almost surely, 2^122215493 is an apocalyptic number.

It is an amenable number.

122215493 is a deficient number, since it is larger than the sum of its proper divisors (1).

122215493 is an equidigital number, since it uses as much as digits as its factorization.

122215493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 122215493 is about 11055.1116231361. Note that the first 3 decimals coincide. The cubic root of 122215493 is about 496.2594097537.

The spelling of 122215493 in words is "one hundred twenty-two million, two hundred fifteen thousand, four hundred ninety-three".