22206331 has 8 divisors (see below), whose sum is σ = 25579520. Its totient is φ = 18883368.

The previous prime is 22206329. The next prime is 22206341. The reversal of 22206331 is 13360222.

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

It is not a de Polignac number, because 22206331 - 2¹ = 22206329 is a prime.

It is a super-2 number, since 2×22206331² = 986242272963122, 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 = 22206299 and 22206308.

It is not an unprimeable number, because it can be changed into a prime (22206341) 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, 11601 + ... + 13378.

It is an arithmetic number, because the mean of its divisors is an integer number (3197440).

Almost surely, 2^22206331 is an apocalyptic number.

22206331 is a deficient number, since it is larger than the sum of its proper divisors (3373189).

22206331 is a wasteful number, since it uses less digits than its factorization.

22206331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25113.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 22206331 is about 4712.3593878226. The cubic root of 22206331 is about 281.0771899069.

Adding to 22206331 its reverse (13360222), we get a palindrome (35566553).

The spelling of 22206331 in words is "twenty-two million, two hundred six thousand, three hundred thirty-one".