23211013432221 has 12 divisors (see below), whose sum is σ = 33528541775872. Its totient is φ = 15473306320776.

The previous prime is 23211013432213. The next prime is 23211013432289. The reversal of 23211013432221 is 12223431011232.

23211013432221 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 1 + 0 + 1 + 3 + 432 + 221 = 666.

It is not a de Polignac number, because 23211013432221 - 2³ = 23211013432213 is a prime.

It is a super-2 number, since 2×23211013432221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23211013432121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58343581 + ... + 58740066.

Almost surely, 2^{23211013432221} is an apocalyptic number.

It is an amenable number.

23211013432221 is a deficient number, since it is larger than the sum of its proper divisors (10317528343651).

23211013432221 is a wasteful number, since it uses less digits than its factorization.

23211013432221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117105680 (or 117105677 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 23211013432221 its reverse (12223431011232), we get a palindrome (35434444443453).

The spelling of 23211013432221 in words is "twenty-three trillion, two hundred eleven billion, thirteen million, four hundred thirty-two thousand, two hundred twenty-one".