22121222223 has 8 divisors (see below), whose sum is σ = 29495968128. Its totient is φ = 14746978904.

The previous prime is 22121222191. The next prime is 22121222231. The reversal of 22121222223 is 32222212122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22121222223 - 2⁵ = 22121222191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22121222223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121222293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6915 + ... + 210452.

It is an arithmetic number, because the mean of its divisors is an integer number (3686996016).

Almost surely, 2^22121222223 is an apocalyptic number.

22121222223 is a deficient number, since it is larger than the sum of its proper divisors (7374745905).

22121222223 is a wasteful number, since it uses less digits than its factorization.

22121222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251293.

The product of its digits is 768, while the sum is 21.

Adding to 22121222223 its reverse (32222212122), we get a palindrome (54343434345).

The spelling of 22121222223 in words is "twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-three".