1222427579 has 4 divisors (see below), whose sum is σ = 1222520520. Its totient is φ = 1222334640.

The previous prime is 1222427509. The next prime is 1222427581. The reversal of 1222427579 is 9757242221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9757242221 = 103 ⋅94730507.

It is a cyclic number.

It is not a de Polignac number, because 1222427579 - 2¹² = 1222423483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222427509) 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, 22682 + ... + 54399.

It is an arithmetic number, because the mean of its divisors is an integer number (305630130).

Almost surely, 2^1222427579 is an apocalyptic number.

1222427579 is a deficient number, since it is larger than the sum of its proper divisors (92941).

1222427579 is an equidigital number, since it uses as much as digits as its factorization.

1222427579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92940.

The product of its digits is 141120, while the sum is 41.

The square root of 1222427579 is about 34963.2318157232. The cubic root of 1222427579 is about 1069.2379874556.

The spelling of 1222427579 in words is "one billion, two hundred twenty-two million, four hundred twenty-seven thousand, five hundred seventy-nine".