2223212111 has 4 divisors (see below), whose sum is σ = 2353989312. Its totient is φ = 2092434912.

The previous prime is 2223212093. The next prime is 2223212119. The reversal of 2223212111 is 1112123222.

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 2223212111 - 2²⁶ = 2156103247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 130777183 = 2223212111 / (2 + 2 + 2 + 3 + 2 + 1 + 2 + 1 + 1 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2223212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223212119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65388575 + ... + 65388608.

It is an arithmetic number, because the mean of its divisors is an integer number (588497328).

Almost surely, 2^2223212111 is an apocalyptic number.

2223212111 is a deficient number, since it is larger than the sum of its proper divisors (130777201).

2223212111 is a wasteful number, since it uses less digits than its factorization.

2223212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130777200.

The product of its digits is 96, while the sum is 17.

The square root of 2223212111 is about 47150.9502661399. The cubic root of 2223212111 is about 1305.1496158032.

Adding to 2223212111 its reverse (1112123222), we get a palindrome (3335335333).

Subtracting from 2223212111 its reverse (1112123222), we obtain a square (1111088889 = 33333²).

It can be divided in two parts, 22232 and 12111, that added together give a palindrome (34343).

The spelling of 2223212111 in words is "two billion, two hundred twenty-three million, two hundred twelve thousand, one hundred eleven".