22225213 has 4 divisors (see below), whose sum is σ = 22361728. Its totient is φ = 22088700.

The previous prime is 22225211. The next prime is 22225277. The reversal of 22225213 is 31252222.

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.

It is a cyclic number.

It is not a de Polignac number, because 22225213 - 2¹ = 22225211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22225211) 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, 68013 + ... + 68338.

It is an arithmetic number, because the mean of its divisors is an integer number (5590432).

Almost surely, 2^22225213 is an apocalyptic number.

It is an amenable number.

22225213 is a deficient number, since it is larger than the sum of its proper divisors (136515).

22225213 is a wasteful number, since it uses less digits than its factorization.

22225213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136514.

The product of its digits is 480, while the sum is 19.

The square root of 22225213 is about 4714.3624171249. The cubic root of 22225213 is about 281.1568337998.

Adding to 22225213 its reverse (31252222), we get a palindrome (53477435).

The spelling of 22225213 in words is "twenty-two million, two hundred twenty-five thousand, two hundred thirteen".