22111221223 has 8 divisors (see below), whose sum is σ = 27213810848. Its totient is φ = 17494592544.

The previous prime is 22111221217. The next prime is 22111221259. The reversal of 22111221223 is 32212211122.

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

It is not a de Polignac number, because 22111221223 - 2⁹ = 22111220711 is a prime.

It is a super-2 number, since 2×22111221223² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22111221223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111221023) 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, 121490136 + ... + 121490317.

It is an arithmetic number, because the mean of its divisors is an integer number (3401726356).

Almost surely, 2^22111221223 is an apocalyptic number.

22111221223 is a deficient number, since it is larger than the sum of its proper divisors (5102589625).

22111221223 is a wasteful number, since it uses less digits than its factorization.

22111221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242980473.

The product of its digits is 192, while the sum is 19.

Adding to 22111221223 its reverse (32212211122), we get a palindrome (54323432345).

The spelling of 22111221223 in words is "twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty-three".