22006331 has 8 divisors (see below), whose sum is σ = 23755680. Its totient is φ = 20323072.

The previous prime is 22006321. The next prime is 22006339. The reversal of 22006331 is 13360022.

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

It is a cyclic number.

It is not a de Polignac number, because 22006331 - 2⁶ = 22006267 is a prime.

It is a super-2 number, since 2×22006331² = 968557208163122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22006339) 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, 15830 + ... + 17163.

It is an arithmetic number, because the mean of its divisors is an integer number (2969460).

Almost surely, 2^22006331 is an apocalyptic number.

22006331 is a deficient number, since it is larger than the sum of its proper divisors (1749349).

22006331 is a wasteful number, since it uses less digits than its factorization.

22006331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33045.

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

The square root of 22006331 is about 4691.0905981445. The cubic root of 22006331 is about 280.2308088377.

Adding to 22006331 its reverse (13360022), we get a palindrome (35366353).

The spelling of 22006331 in words is "twenty-two million, six thousand, three hundred thirty-one".