1222097999 has 2 divisors, whose sum is σ = 1222098000. Its totient is φ = 1222097998.

The previous prime is 1222097983. The next prime is 1222098011. The reversal of 1222097999 is 9997902221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222097999 - 2⁴ = 1222097983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222097099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611048999 + 611049000.

It is an arithmetic number, because the mean of its divisors is an integer number (611049000).

Almost surely, 2^1222097999 is an apocalyptic number.

1222097999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222097999 is an equidigital number, since it uses as much as digits as its factorization.

1222097999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 50.

The square root of 1222097999 is about 34958.5182609332. The cubic root of 1222097999 is about 1069.1418860214.

The spelling of 1222097999 in words is "one billion, two hundred twenty-two million, ninety-seven thousand, nine hundred ninety-nine".