23234163221 has 4 divisors (see below), whose sum is σ = 23235165132. Its totient is φ = 23233161312.

The previous prime is 23234163217. The next prime is 23234163223. The reversal of 23234163221 is 12236143232.

It is a happy number.

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 21349300996 + 1884862225 = 146114^2 + 43415^2 .

It is a cyclic number.

It is not a de Polignac number, because 23234163221 - 2² = 23234163217 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 (23234163223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465326 + ... + 512831.

It is an arithmetic number, because the mean of its divisors is an integer number (5808791283).

Almost surely, 2^23234163221 is an apocalyptic number.

It is an amenable number.

23234163221 is a deficient number, since it is larger than the sum of its proper divisors (1001911).

23234163221 is an equidigital number, since it uses as much as digits as its factorization.

23234163221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001910.

The product of its digits is 10368, while the sum is 29.

The spelling of 23234163221 in words is "twenty-three billion, two hundred thirty-four million, one hundred sixty-three thousand, two hundred twenty-one".