1222321099 has 2 divisors, whose sum is σ = 1222321100. Its totient is φ = 1222321098.

The previous prime is 1222321081. The next prime is 1222321127. The reversal of 1222321099 is 9901232221.

It is a weak prime.

It is an emirp because it is prime and its reverse (9901232221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222321099 - 2¹⁹ = 1221796811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222321099.

It is not a weakly prime, because it can be changed into another prime (1222321049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611160549 + 611160550.

It is an arithmetic number, because the mean of its divisors is an integer number (611160550).

Almost surely, 2^1222321099 is an apocalyptic number.

1222321099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222321099 is an equidigital number, since it uses as much as digits as its factorization.

1222321099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1222321099 is about 34961.7090400341. The cubic root of 1222321099 is about 1069.2069410993.

The spelling of 1222321099 in words is "one billion, two hundred twenty-two million, three hundred twenty-one thousand, ninety-nine".