222222310215211 has 2 divisors, whose sum is σ = 222222310215212. Its totient is φ = 222222310215210.

The previous prime is 222222310215209. The next prime is 222222310215223. The reversal of 222222310215211 is 112512013222222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222222310215211 - 2¹ = 222222310215209 is a prime.

It is a super-2 number, since 2×222222310215211² (a number of 29 digits) contains 22 as substring.

Together with 222222310215209, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 222222310215211.

It is not a weakly prime, because it can be changed into another prime (222222310216211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111155107605 + 111111155107606.

It is an arithmetic number, because the mean of its divisors is an integer number (111111155107606).

Almost surely, 2^{222222310215211} is an apocalyptic number.

222222310215211 is a deficient number, since it is larger than the sum of its proper divisors (1).

222222310215211 is an equidigital number, since it uses as much as digits as its factorization.

222222310215211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 222222310215211 its reverse (112512013222222), we get a palindrome (334734323437433).

The spelling of 222222310215211 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, three hundred ten million, two hundred fifteen thousand, two hundred eleven".