22211323 has 4 divisors (see below), whose sum is σ = 23380360. Its totient is φ = 21042288.

The previous prime is 22211279. The next prime is 22211327. The reversal of 22211323 is 32311222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32311222 = 2 ⋅16155611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22211323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22211297 and 22211306.

It is not an unprimeable number, because it can be changed into a prime (22211327) 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, 584490 + ... + 584527.

It is an arithmetic number, because the mean of its divisors is an integer number (5845090).

Almost surely, 2^22211323 is an apocalyptic number.

22211323 is a deficient number, since it is larger than the sum of its proper divisors (1169037).

22211323 is a wasteful number, since it uses less digits than its factorization.

22211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169036.

The product of its digits is 144, while the sum is 16.

The square root of 22211323 is about 4712.8890290352. The cubic root of 22211323 is about 281.0982504504.

Adding to 22211323 its reverse (32311222), we get a palindrome (54522545).

The spelling of 22211323 in words is "twenty-two million, two hundred eleven thousand, three hundred twenty-three".