23353632221 has 4 divisors (see below), whose sum is σ = 23354291100. Its totient is φ = 23352973344.

The previous prime is 23353632209. The next prime is 23353632223. The reversal of 23353632221 is 12223635332.

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 9807931225 + 13545700996 = 99035^2 + 116386^2 .

It is a cyclic number.

It is not a de Polignac number, because 23353632221 - 2²⁶ = 23286523357 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 (23353632223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273056 + ... + 348233.

It is an arithmetic number, because the mean of its divisors is an integer number (5838572775).

Almost surely, 2^23353632221 is an apocalyptic number.

It is an amenable number.

23353632221 is a deficient number, since it is larger than the sum of its proper divisors (658879).

23353632221 is an equidigital number, since it uses as much as digits as its factorization.

23353632221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658878.

The product of its digits is 38880, while the sum is 32.

The spelling of 23353632221 in words is "twenty-three billion, three hundred fifty-three million, six hundred thirty-two thousand, two hundred twenty-one".