22205331 has 12 divisors (see below), whose sum is σ = 33109440. Its totient is φ = 14325840.

The previous prime is 22205317. The next prime is 22205333. The reversal of 22205331 is 13350222.

It is not a de Polignac number, because 22205331 - 2⁷ = 22205203 is a prime.

It is a super-2 number, since 2×22205331² = 986153449639122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22205333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39516 + ... + 40073.

It is an arithmetic number, because the mean of its divisors is an integer number (2759120).

Almost surely, 2^22205331 is an apocalyptic number.

22205331 is a deficient number, since it is larger than the sum of its proper divisors (10904109).

22205331 is a wasteful number, since it uses less digits than its factorization.

22205331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79626 (or 79623 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 22205331 is about 4712.2532826664. The cubic root of 22205331 is about 281.0729706685.

Adding to 22205331 its reverse (13350222), we get a palindrome (35555553).

The spelling of 22205331 in words is "twenty-two million, two hundred five thousand, three hundred thirty-one".