23834209221 has 12 divisors (see below), whose sum is σ = 34433491872. Its totient is φ = 15886564776.

The previous prime is 23834209199. The next prime is 23834209247. The reversal of 23834209221 is 12290243832.

23834209221 is a `hidden beast` number, since 2 + 3 + 8 + 3 + 420 + 9 + 221 = 666.

It is not a de Polignac number, because 23834209221 - 2¹⁵ = 23834176453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23834202221) 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, 189831 + ... + 289316.

It is an arithmetic number, because the mean of its divisors is an integer number (2869457656).

Almost surely, 2^23834209221 is an apocalyptic number.

It is an amenable number.

23834209221 is a deficient number, since it is larger than the sum of its proper divisors (10599282651).

23834209221 is a wasteful number, since it uses less digits than its factorization.

23834209221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484680 (or 484677 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 23834209221 in words is "twenty-three billion, eight hundred thirty-four million, two hundred nine thousand, two hundred twenty-one".