23214221 has 8 divisors (see below), whose sum is σ = 23700864. Its totient is φ = 22731120.

The previous prime is 23214211. The next prime is 23214223. The reversal of 23214221 is 12241232.

23214221 is nontrivially palindromic in base 2.

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 23214221 - 2⁶ = 23214157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23214221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23214223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15320 + ... + 16766.

It is an arithmetic number, because the mean of its divisors is an integer number (2962608).

Almost surely, 2^23214221 is an apocalyptic number.

It is an amenable number.

23214221 is a deficient number, since it is larger than the sum of its proper divisors (486643).

23214221 is a wasteful number, since it uses less digits than its factorization.

23214221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771.

The product of its digits is 192, while the sum is 17.

The square root of 23214221 is about 4818.1138425737. The cubic root of 23214221 is about 285.2668926967.

Adding to 23214221 its reverse (12241232), we get a palindrome (35455453).

The spelling of 23214221 in words is "twenty-three million, two hundred fourteen thousand, two hundred twenty-one".