122221417 has 2 divisors, whose sum is σ = 122221418. Its totient is φ = 122221416.

The previous prime is 122221409. The next prime is 122221423. The reversal of 122221417 is 714122221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117961321 + 4260096 = 10861^2 + 2064^2 .

It is an emirp because it is prime and its reverse (714122221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122221417 - 2³ = 122221409 is a prime.

It is not a weakly prime, because it can be changed into another prime (122221427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110708 + 61110709.

It is an arithmetic number, because the mean of its divisors is an integer number (61110709).

Almost surely, 2^122221417 is an apocalyptic number.

It is an amenable number.

122221417 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221417 is an equidigital number, since it uses as much as digits as its factorization.

122221417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 22.

The square root of 122221417 is about 11055.3795502461. The cubic root of 122221417 is about 496.2674278131.

Adding to 122221417 its reverse (714122221), we get a palindrome (836343638).

The spelling of 122221417 in words is "one hundred twenty-two million, two hundred twenty-one thousand, four hundred seventeen".