22323230021221 has 4 divisors (see below), whose sum is σ = 22406216006700. Its totient is φ = 22240244035744.

The previous prime is 22323230021207. The next prime is 22323230021249. The reversal of 22323230021221 is 12212003232322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1765938000996 + 20557292020225 = 1328886^2 + 4534015^2 .

It is a cyclic number.

It is not a de Polignac number, because 22323230021221 - 2²⁵ = 22323196466789 is a prime.

It is a super-3 number, since 3×22323230021221³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22323230021201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41492992336 + ... + 41492992873.

It is an arithmetic number, because the mean of its divisors is an integer number (5601554001675).

Almost surely, 2^{22323230021221} is an apocalyptic number.

It is an amenable number.

22323230021221 is a deficient number, since it is larger than the sum of its proper divisors (82985985479).

22323230021221 is an equidigital number, since it uses as much as digits as its factorization.

22323230021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82985985478.

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

Adding to 22323230021221 its reverse (12212003232322), we get a palindrome (34535233253543).

The spelling of 22323230021221 in words is "twenty-two trillion, three hundred twenty-three billion, two hundred thirty million, twenty-one thousand, two hundred twenty-one".