22123213 has 8 divisors (see below), whose sum is σ = 25520832. Its totient is φ = 18784896.

The previous prime is 22123187. The next prime is 22123237. The reversal of 22123213 is 31232122.

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

It is a cyclic number.

It is not a de Polignac number, because 22123213 - 2⁹ = 22122701 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 (22121213) 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, 14020 + ... + 15517.

It is an arithmetic number, because the mean of its divisors is an integer number (3190104).

Almost surely, 2^22123213 is an apocalyptic number.

It is an amenable number.

22123213 is a deficient number, since it is larger than the sum of its proper divisors (3397619).

22123213 is a wasteful number, since it uses less digits than its factorization.

22123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29651.

The product of its digits is 144, while the sum is 16.

The square root of 22123213 is about 4703.5319707641. The cubic root of 22123213 is about 280.7260620651.

Adding to 22123213 its reverse (31232122), we get a palindrome (53355335).

The spelling of 22123213 in words is "twenty-two million, one hundred twenty-three thousand, two hundred thirteen".