1222426417 has 4 divisors (see below), whose sum is σ = 1222629876. Its totient is φ = 1222222960.

The previous prime is 1222426409. The next prime is 1222426421. The reversal of 1222426417 is 7146242221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7146242221 = 5011 ⋅1426111.

It can be written as a sum of positive squares in 2 ways, for example, as 441168016 + 781258401 = 21004^2 + 27951^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222426417 - 2³ = 1222426409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222426717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92434 + ... + 104827.

It is an arithmetic number, because the mean of its divisors is an integer number (305657469).

Almost surely, 2^1222426417 is an apocalyptic number.

It is an amenable number.

1222426417 is a deficient number, since it is larger than the sum of its proper divisors (203459).

1222426417 is an equidigital number, since it uses as much as digits as its factorization.

1222426417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203458.

The product of its digits is 10752, while the sum is 31.

The square root of 1222426417 is about 34963.2151982623. The cubic root of 1222426417 is about 1069.2376486612.

Adding to 1222426417 its reverse (7146242221), we get a palindrome (8368668638).

The spelling of 1222426417 in words is "one billion, two hundred twenty-two million, four hundred twenty-six thousand, four hundred seventeen".