23331333221 has 8 divisors (see below), whose sum is σ = 26843337600. Its totient is φ = 19864068048.

The previous prime is 23331333211. The next prime is 23331333247. The reversal of 23331333221 is 12233313332.

It is a happy number.

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 23331333221 - 2²² = 23327138917 is a prime.

It is a super-2 number, since 2×23331333221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23331333211) 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, 11183681 + ... + 11185766.

It is an arithmetic number, because the mean of its divisors is an integer number (3355417200).

Almost surely, 2^23331333221 is an apocalyptic number.

It is an amenable number.

23331333221 is a deficient number, since it is larger than the sum of its proper divisors (3512004379).

23331333221 is a wasteful number, since it uses less digits than its factorization.

23331333221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22369603.

The product of its digits is 5832, while the sum is 26.

Adding to 23331333221 its reverse (12233313332), we get a palindrome (35564646553).

The spelling of 23331333221 in words is "twenty-three billion, three hundred thirty-one million, three hundred thirty-three thousand, two hundred twenty-one".