22231123 has 4 divisors (see below), whose sum is σ = 22948288. Its totient is φ = 21513960.

The previous prime is 22231067. The next prime is 22231147. The reversal of 22231123 is 32113222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22231123 is a prime.

It is a super-2 number, since 2×22231123² = 988445659682258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22231097 and 22231106.

It is not an unprimeable number, because it can be changed into a prime (22231723) 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, 358536 + ... + 358597.

It is an arithmetic number, because the mean of its divisors is an integer number (5737072).

Almost surely, 2^22231123 is an apocalyptic number.

22231123 is a deficient number, since it is larger than the sum of its proper divisors (717165).

22231123 is an equidigital number, since it uses as much as digits as its factorization.

22231123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717164.

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

The square root of 22231123 is about 4714.9891834446. The cubic root of 22231123 is about 281.1817527905.

Adding to 22231123 its reverse (32113222), we get a palindrome (54344345).

The spelling of 22231123 in words is "twenty-two million, two hundred thirty-one thousand, one hundred twenty-three".