23133201221 has 8 divisors (see below), whose sum is σ = 25061858304. Its totient is φ = 21225855600.

The previous prime is 23133201209. The next prime is 23133201241. The reversal of 23133201221 is 12210233132.

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 23133201221 - 2²² = 23129006917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23133201193 and 23133201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23133201241) 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, 5325605 + ... + 5329946.

It is an arithmetic number, because the mean of its divisors is an integer number (3132732288).

Almost surely, 2^23133201221 is an apocalyptic number.

It is an amenable number.

23133201221 is a deficient number, since it is larger than the sum of its proper divisors (1928657083).

23133201221 is a wasteful number, since it uses less digits than its factorization.

23133201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10655731.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23133201221 its reverse (12210233132), we get a palindrome (35343434353).

The spelling of 23133201221 in words is "twenty-three billion, one hundred thirty-three million, two hundred one thousand, two hundred twenty-one".