1222129999 has 2 divisors, whose sum is σ = 1222130000. Its totient is φ = 1222129998.

The previous prime is 1222129981. The next prime is 1222130003. The reversal of 1222129999 is 9999212221.

It is a strong prime.

It is an emirp because it is prime and its reverse (9999212221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222129999 - 2⁷ = 1222129871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222126999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611064999 + 611065000.

It is an arithmetic number, because the mean of its divisors is an integer number (611065000).

Almost surely, 2^1222129999 is an apocalyptic number.

1222129999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222129999 is an equidigital number, since it uses as much as digits as its factorization.

1222129999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 46.

The square root of 1222129999 is about 34958.9759432395. The cubic root of 1222129999 is about 1069.1512175812.

The spelling of 1222129999 in words is "one billion, two hundred twenty-two million, one hundred twenty-nine thousand, nine hundred ninety-nine".