20043343221 has 8 divisors (see below), whose sum is σ = 29153953824. Its totient is φ = 12147480720.

The previous prime is 20043343193. The next prime is 20043343237. The reversal of 20043343221 is 12234334002.

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

It is not a de Polignac number, because 20043343221 - 2⁷ = 20043343093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20043343191 and 20043343200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043343321) 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, 303686986 + ... + 303687051.

It is an arithmetic number, because the mean of its divisors is an integer number (3644244228).

Almost surely, 2^20043343221 is an apocalyptic number.

It is an amenable number.

20043343221 is a deficient number, since it is larger than the sum of its proper divisors (9110610603).

20043343221 is a wasteful number, since it uses less digits than its factorization.

20043343221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607374051.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20043343221 its reverse (12234334002), we get a palindrome (32277677223).

The spelling of 20043343221 in words is "twenty billion, forty-three million, three hundred forty-three thousand, two hundred twenty-one".