20043232221 has 8 divisors (see below), whose sum is σ = 28130852320. Its totient is φ = 12658883472.

The previous prime is 20043232201. The next prime is 20043232247. The reversal of 20043232221 is 12223234002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20043232221 - 2⁷ = 20043232093 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 (20043232201) 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, 175817770 + ... + 175817883.

It is an arithmetic number, because the mean of its divisors is an integer number (3516356540).

Almost surely, 2^20043232221 is an apocalyptic number.

It is an amenable number.

20043232221 is a deficient number, since it is larger than the sum of its proper divisors (8087620099).

20043232221 is a wasteful number, since it uses less digits than its factorization.

20043232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351635675.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20043232221 its reverse (12223234002), we get a palindrome (32266466223).

The spelling of 20043232221 in words is "twenty billion, forty-three million, two hundred thirty-two thousand, two hundred twenty-one".