23213203221 has 8 divisors (see below), whose sum is σ = 33331779040. Its totient is φ = 14285048112.

The previous prime is 23213203219. The next prime is 23213203259. The reversal of 23213203221 is 12230231232.

It is a happy number.

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

It is not a de Polignac number, because 23213203221 - 2¹ = 23213203219 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 (23213203271) 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, 297605131 + ... + 297605208.

It is an arithmetic number, because the mean of its divisors is an integer number (4166472380).

Almost surely, 2^23213203221 is an apocalyptic number.

It is an amenable number.

23213203221 is a deficient number, since it is larger than the sum of its proper divisors (10118575819).

23213203221 is a wasteful number, since it uses less digits than its factorization.

23213203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595210355.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23213203221 its reverse (12230231232), we get a palindrome (35443434453).

The spelling of 23213203221 in words is "twenty-three billion, two hundred thirteen million, two hundred three thousand, two hundred twenty-one".