22251133 has 4 divisors (see below), whose sum is σ = 22331740. Its totient is φ = 22170528.

The previous prime is 22251127. The next prime is 22251137. The reversal of 22251133 is 33115222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11142244 + 11108889 = 3338^2 + 3333^2 .

It is a cyclic number.

It is not a de Polignac number, because 22251133 - 2⁵ = 22251101 is a prime.

It is a super-2 number, since 2×22251133² = 990225839567378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22251133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22251137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39888 + ... + 40441.

It is an arithmetic number, because the mean of its divisors is an integer number (5582935).

Almost surely, 2^22251133 is an apocalyptic number.

It is an amenable number.

22251133 is a deficient number, since it is larger than the sum of its proper divisors (80607).

22251133 is an equidigital number, since it uses as much as digits as its factorization.

22251133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80606.

The product of its digits is 360, while the sum is 19.

The square root of 22251133 is about 4717.1106622593. The cubic root of 22251133 is about 281.2660904045.

Adding to 22251133 its reverse (33115222), we get a palindrome (55366355).

The spelling of 22251133 in words is "twenty-two million, two hundred fifty-one thousand, one hundred thirty-three".