222321213211 has 4 divisors (see below), whose sum is σ = 222327522352. Its totient is φ = 222314904072.

The previous prime is 222321213137. The next prime is 222321213251. The reversal of 222321213211 is 112312123222.

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

It is a cyclic number.

It is not a de Polignac number, because 222321213211 - 2⁹ = 222321212699 is a prime.

It is a super-2 number, since 2×222321213211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222321213251) 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, 3101415 + ... + 3172288.

It is an arithmetic number, because the mean of its divisors is an integer number (55581880588).

Almost surely, 2^222321213211 is an apocalyptic number.

222321213211 is a deficient number, since it is larger than the sum of its proper divisors (6309141).

222321213211 is an equidigital number, since it uses as much as digits as its factorization.

222321213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6309140.

The product of its digits is 576, while the sum is 22.

Adding to 222321213211 its reverse (112312123222), we get a palindrome (334633336433).

The spelling of 222321213211 in words is "two hundred twenty-two billion, three hundred twenty-one million, two hundred thirteen thousand, two hundred eleven".