22012222223 has 4 divisors (see below), whose sum is σ = 22018574760. Its totient is φ = 22005869688.

The previous prime is 22012222213. The next prime is 22012222241. The reversal of 22012222223 is 32222221022.

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 22012222223 - 2⁶ = 22012222159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22012222195 and 22012222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012222213) 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, 3171068 + ... + 3178001.

It is an arithmetic number, because the mean of its divisors is an integer number (5504643690).

Almost surely, 2^22012222223 is an apocalyptic number.

22012222223 is a deficient number, since it is larger than the sum of its proper divisors (6352537).

22012222223 is an equidigital number, since it uses as much as digits as its factorization.

22012222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6352536.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22012222223 its reverse (32222221022), we get a palindrome (54234443245).

The spelling of 22012222223 in words is "twenty-two billion, twelve million, two hundred twenty-two thousand, two hundred twenty-three".