22123331 has 4 divisors (see below), whose sum is σ = 22209672. Its totient is φ = 22036992.

The previous prime is 22123319. The next prime is 22123349. The reversal of 22123331 is 13332122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13332122 = 2 ⋅6666061.

It is a cyclic number.

It is not a de Polignac number, because 22123331 - 2¹⁸ = 21861187 is a prime.

It is a super-2 number, since 2×22123331² = 978883549071122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22123351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42785 + ... + 43298.

It is an arithmetic number, because the mean of its divisors is an integer number (5552418).

Almost surely, 2^22123331 is an apocalyptic number.

22123331 is a deficient number, since it is larger than the sum of its proper divisors (86341).

22123331 is an equidigital number, since it uses as much as digits as its factorization.

22123331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86340.

The product of its digits is 216, while the sum is 17.

The square root of 22123331 is about 4703.5445145124. The cubic root of 22123331 is about 280.7265611730.

Adding to 22123331 its reverse (13332122), we get a palindrome (35455453).

The spelling of 22123331 in words is "twenty-two million, one hundred twenty-three thousand, three hundred thirty-one".