22210231 has 4 divisors (see below), whose sum is σ = 22726792. Its totient is φ = 21693672.

The previous prime is 22210213. The next prime is 22210267. The reversal of 22210231 is 13201222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13201222 = 2 ⋅6600611.

It is not a de Polignac number, because 22210231 - 2⁷ = 22210103 is a prime.

It is a super-2 number, since 2×22210231² = 986588722146722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22217231) 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, 258216 + ... + 258301.

It is an arithmetic number, because the mean of its divisors is an integer number (5681698).

Almost surely, 2^22210231 is an apocalyptic number.

22210231 is a deficient number, since it is larger than the sum of its proper divisors (516561).

22210231 is an equidigital number, since it uses as much as digits as its factorization.

22210231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516560.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22210231 is about 4712.7731751061. The cubic root of 22210231 is about 281.0936437262.

Adding to 22210231 its reverse (13201222), we get a palindrome (35411453).

Subtracting from 22210231 its reverse (13201222), we obtain a palindrome (9009009).

The spelling of 22210231 in words is "twenty-two million, two hundred ten thousand, two hundred thirty-one".