22331023220221 has 8 divisors (see below), whose sum is σ = 22414272511320. Its totient is φ = 22247775665472.

The previous prime is 22331023220203. The next prime is 22331023220249. The reversal of 22331023220221 is 12202232013322.

It can be written as a sum of positive squares in 4 ways, for example, as 1146636197721 + 21184387022500 = 1070811^2 + 4602650^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22331023220221 - 2¹⁷ = 22331023089149 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 (22331023290221) 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, 29063631 + ... + 29822083.

It is an arithmetic number, because the mean of its divisors is an integer number (2801784063915).

Almost surely, 2^{22331023220221} is an apocalyptic number.

It is an amenable number.

22331023220221 is a deficient number, since it is larger than the sum of its proper divisors (83249291099).

22331023220221 is a wasteful number, since it uses less digits than its factorization.

22331023220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868175.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 22331023220221 its reverse (12202232013322), we get a palindrome (34533255233543).

The spelling of 22331023220221 in words is "twenty-two trillion, three hundred thirty-one billion, twenty-three million, two hundred twenty thousand, two hundred twenty-one".