1222119979 has 2 divisors, whose sum is σ = 1222119980. Its totient is φ = 1222119978.

The previous prime is 1222119961. The next prime is 1222120007. The reversal of 1222119979 is 9799112221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222119979 - 2¹¹ = 1222117931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222119929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611059989 + 611059990.

It is an arithmetic number, because the mean of its divisors is an integer number (611059990).

Almost surely, 2^1222119979 is an apocalyptic number.

1222119979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222119979 is an equidigital number, since it uses as much as digits as its factorization.

1222119979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 43.

The square root of 1222119979 is about 34958.8326321117. The cubic root of 1222119979 is about 1069.1482956540.

The spelling of 1222119979 in words is "one billion, two hundred twenty-two million, one hundred nineteen thousand, nine hundred seventy-nine".