2122210309 has 2 divisors, whose sum is σ = 2122210310. Its totient is φ = 2122210308.

The previous prime is 2122210303. The next prime is 2122210331. The reversal of 2122210309 is 9030122212.

It is an a-pointer prime, because the next prime (2122210331) can be obtained adding 2122210309 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2051818209 + 70392100 = 45297^2 + 8390^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122210309 - 2¹⁷ = 2122079237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122210309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122210303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061105154 + 1061105155.

It is an arithmetic number, because the mean of its divisors is an integer number (1061105155).

Almost surely, 2^2122210309 is an apocalyptic number.

It is an amenable number.

2122210309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122210309 is an equidigital number, since it uses as much as digits as its factorization.

2122210309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2122210309 is about 46067.4539018600. The cubic root of 2122210309 is about 1285.0779543618.

The spelling of 2122210309 in words is "two billion, one hundred twenty-two million, two hundred ten thousand, three hundred nine".