22262213 has 4 divisors (see below), whose sum is σ = 22342860. Its totient is φ = 22181568.

The previous prime is 22262209. The next prime is 22262249. The reversal of 22262213 is 31226222.

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 6880129 + 15382084 = 2623^2 + 3922^2 .

It is a cyclic number.

It is not a de Polignac number, because 22262213 - 2² = 22262209 is a prime.

It is a super-2 number, since 2×22262213² = 991212255314738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22262203) 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, 39908 + ... + 40461.

It is an arithmetic number, because the mean of its divisors is an integer number (5585715).

Almost surely, 2^22262213 is an apocalyptic number.

It is an amenable number.

22262213 is a deficient number, since it is larger than the sum of its proper divisors (80647).

22262213 is an equidigital number, since it uses as much as digits as its factorization.

22262213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80646.

The product of its digits is 576, while the sum is 20.

The square root of 22262213 is about 4718.2849638401. The cubic root of 22262213 is about 281.3127683445.

Adding to 22262213 its reverse (31226222), we get a palindrome (53488435).

The spelling of 22262213 in words is "twenty-two million, two hundred sixty-two thousand, two hundred thirteen".