13222212209 has 2 divisors, whose sum is σ = 13222212210. Its totient is φ = 13222212208.

The previous prime is 13222212181. The next prime is 13222212257. The reversal of 13222212209 is 90221222231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11147136400 + 2075075809 = 105580^2 + 45553^2 .

It is a cyclic number.

It is not a de Polignac number, because 13222212209 - 2¹⁶ = 13222146673 is a prime.

It is not a weakly prime, because it can be changed into another prime (13222217209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611106104 + 6611106105.

It is an arithmetic number, because the mean of its divisors is an integer number (6611106105).

Almost surely, 2^13222212209 is an apocalyptic number.

It is an amenable number.

13222212209 is a deficient number, since it is larger than the sum of its proper divisors (1).

13222212209 is an equidigital number, since it uses as much as digits as its factorization.

13222212209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

It can be divided in two parts, 13 and 222212209, that added together give a palindrome (222212222).

The spelling of 13222212209 in words is "thirteen billion, two hundred twenty-two million, two hundred twelve thousand, two hundred nine".