22007331 has 6 divisors (see below), whose sum is σ = 31788380. Its totient is φ = 14671548.

The previous prime is 22007329. The next prime is 22007347. The reversal of 22007331 is 13370022.

It is not a de Polignac number, because 22007331 - 2¹ = 22007329 is a prime.

It is a super-2 number, since 2×22007331² = 968645235487122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22007351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1222621 + ... + 1222638.

Almost surely, 2^22007331 is an apocalyptic number.

22007331 is a deficient number, since it is larger than the sum of its proper divisors (9781049).

22007331 is a wasteful number, since it uses less digits than its factorization.

22007331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445265 (or 2445262 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 22007331 is about 4691.1971819569. The cubic root of 22007331 is about 280.2350534732.

Adding to 22007331 its reverse (13370022), we get a palindrome (35377353).

The spelling of 22007331 in words is "twenty-two million, seven thousand, three hundred thirty-one".