212223221311 has 4 divisors (see below), whose sum is σ = 212591026432. Its totient is φ = 211855416192.

The previous prime is 212223221281. The next prime is 212223221321. The reversal of 212223221311 is 113122322212.

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 212223221311 - 2⁵ = 212223221279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212223221321) 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, 183901695 + ... + 183902848.

It is an arithmetic number, because the mean of its divisors is an integer number (53147756608).

Almost surely, 2^212223221311 is an apocalyptic number.

212223221311 is a deficient number, since it is larger than the sum of its proper divisors (367805121).

212223221311 is an equidigital number, since it uses as much as digits as its factorization.

212223221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367805120.

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

Adding to 212223221311 its reverse (113122322212), we get a palindrome (325345543523).

The spelling of 212223221311 in words is "two hundred twelve billion, two hundred twenty-three million, two hundred twenty-one thousand, three hundred eleven".