20221443321 has 16 divisors (see below), whose sum is σ = 28037698560. Its totient is φ = 12947943680.

The previous prime is 20221443287. The next prime is 20221443343. The reversal of 20221443321 is 12334412202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20221443321 - 2⁹ = 20221442809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20221443291 and 20221443300.

It is not an unprimeable number, because it can be changed into a prime (20221443421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591840 + ... + 625073.

It is an arithmetic number, because the mean of its divisors is an integer number (1752356160).

Almost surely, 2^20221443321 is an apocalyptic number.

It is an amenable number.

20221443321 is a deficient number, since it is larger than the sum of its proper divisors (7816255239).

20221443321 is a wasteful number, since it uses less digits than its factorization.

20221443321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217136.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20221443321 its reverse (12334412202), we get a palindrome (32555855523).

The spelling of 20221443321 in words is "twenty billion, two hundred twenty-one million, four hundred forty-three thousand, three hundred twenty-one".