2220311209 has 2 divisors, whose sum is σ = 2220311210. Its totient is φ = 2220311208.

The previous prime is 2220311201. The next prime is 2220311273. The reversal of 2220311209 is 9021130222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1509555609 + 710755600 = 38853^2 + 26660^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220311209 - 2³ = 2220311201 is a prime.

It is a super-2 number, since 2×2220311209² = 9859563729622083362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2220311209.

It is not a weakly prime, because it can be changed into another prime (2220311201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110155604 + 1110155605.

It is an arithmetic number, because the mean of its divisors is an integer number (1110155605).

Almost surely, 2^2220311209 is an apocalyptic number.

It is an amenable number.

2220311209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220311209 is an equidigital number, since it uses as much as digits as its factorization.

2220311209 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2220311209 is about 47120.1783634145. The cubic root of 2220311209 is about 1304.5817049197.

The spelling of 2220311209 in words is "two billion, two hundred twenty million, three hundred eleven thousand, two hundred nine".