22522281 has 8 divisors (see below), whose sum is σ = 30069984. Its totient is φ = 14994720.

The previous prime is 22522271. The next prime is 22522301. The reversal of 22522281 is 18222522.

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

It is not a de Polignac number, because 22522281 - 2⁹ = 22521769 is a prime.

It is a super-3 number, since 3×22522281³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (22522211) 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, 2196 + ... + 7061.

It is an arithmetic number, because the mean of its divisors is an integer number (3758748).

Almost surely, 2^22522281 is an apocalyptic number.

It is an amenable number.

22522281 is a deficient number, since it is larger than the sum of its proper divisors (7547703).

22522281 is an equidigital number, since it uses as much as digits as its factorization.

22522281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10071.

The product of its digits is 1280, while the sum is 24.

The square root of 22522281 is about 4745.7645327176. The cubic root of 22522281 is about 282.4039655822.

The spelling of 22522281 in words is "twenty-two million, five hundred twenty-two thousand, two hundred eighty-one".