1222421579 has 2 divisors, whose sum is σ = 1222421580. Its totient is φ = 1222421578.

The previous prime is 1222421513. The next prime is 1222421591. The reversal of 1222421579 is 9751242221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222421579 - 2⁸ = 1222421323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222421279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611210789 + 611210790.

It is an arithmetic number, because the mean of its divisors is an integer number (611210790).

Almost surely, 2^1222421579 is an apocalyptic number.

1222421579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222421579 is an equidigital number, since it uses as much as digits as its factorization.

1222421579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 1222421579 is about 34963.1460111930. The cubic root of 1222421579 is about 1069.2362380845.

The spelling of 1222421579 in words is "one billion, two hundred twenty-two million, four hundred twenty-one thousand, five hundred seventy-nine".