22271329 has 4 divisors (see below), whose sum is σ = 22282240. Its totient is φ = 22260420.

The previous prime is 22271311. The next prime is 22271339. The reversal of 22271329 is 92317222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22271329 - 2⁷ = 22271201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22271297 and 22271306.

It is not an unprimeable number, because it can be changed into a prime (22271339) 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 3 ways as a sum of consecutive naturals, for example, 1377 + ... + 6814.

It is an arithmetic number, because the mean of its divisors is an integer number (5570560).

Almost surely, 2^22271329 is an apocalyptic number.

It is an amenable number.

22271329 is a deficient number, since it is larger than the sum of its proper divisors (10911).

22271329 is an equidigital number, since it uses as much as digits as its factorization.

22271329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10910.

The product of its digits is 3024, while the sum is 28.

The square root of 22271329 is about 4719.2508939449. The cubic root of 22271329 is about 281.3511607128.

The spelling of 22271329 in words is "twenty-two million, two hundred seventy-one thousand, three hundred twenty-nine".