212223222311 has 4 divisors (see below), whose sum is σ = 212257843224. Its totient is φ = 212188601400.

The previous prime is 212223222271. The next prime is 212223222331. The reversal of 212223222311 is 113222322212.

It is a happy number.

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 212223222311 - 2¹⁴ = 212223205927 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 (212223222331) 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, 17301260 + ... + 17313521.

It is an arithmetic number, because the mean of its divisors is an integer number (53064460806).

Almost surely, 2^212223222311 is an apocalyptic number.

212223222311 is a deficient number, since it is larger than the sum of its proper divisors (34620913).

212223222311 is an equidigital number, since it uses as much as digits as its factorization.

212223222311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34620912.

The product of its digits is 1152, while the sum is 23.

Adding to 212223222311 its reverse (113222322212), we get a palindrome (325445544523).

Subtracting from 212223222311 its reverse (113222322212), we obtain a palindrome (99000900099).

The spelling of 212223222311 in words is "two hundred twelve billion, two hundred twenty-three million, two hundred twenty-two thousand, three hundred eleven".