2212320289 has 4 divisors (see below), whose sum is σ = 2213008660. Its totient is φ = 2211631920.

The previous prime is 2212320281. The next prime is 2212320307. The reversal of 2212320289 is 9820232122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 249387264 + 1962933025 = 15792^2 + 44305^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212320289 - 2³ = 2212320281 is a prime.

It is a super-2 number, since 2×2212320289² = 9788722122242087042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2212320289.

It is not an unprimeable number, because it can be changed into a prime (2212320281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339342 + ... + 345799.

It is an arithmetic number, because the mean of its divisors is an integer number (553252165).

Almost surely, 2^2212320289 is an apocalyptic number.

It is an amenable number.

2212320289 is a deficient number, since it is larger than the sum of its proper divisors (688371).

2212320289 is an equidigital number, since it uses as much as digits as its factorization.

2212320289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688370.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2212320289 is about 47035.3089603970. The cubic root of 2212320289 is about 1303.0147564987.

The spelling of 2212320289 in words is "two billion, two hundred twelve million, three hundred twenty thousand, two hundred eighty-nine".