1222830979 has 2 divisors, whose sum is σ = 1222830980. Its totient is φ = 1222830978.

The previous prime is 1222830943. The next prime is 1222831009. The reversal of 1222830979 is 9790382221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222830979 - 2²¹ = 1220733827 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222830379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611415489 + 611415490.

It is an arithmetic number, because the mean of its divisors is an integer number (611415490).

Almost surely, 2^1222830979 is an apocalyptic number.

1222830979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222830979 is an equidigital number, since it uses as much as digits as its factorization.

1222830979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1222830979 is about 34969.0002573708. Note that the first 3 decimals coincide. The cubic root of 1222830979 is about 1069.3555903779.

The spelling of 1222830979 in words is "one billion, two hundred twenty-two million, eight hundred thirty thousand, nine hundred seventy-nine".