22320021443 has 8 divisors (see below), whose sum is σ = 22874880000. Its totient is φ = 21771971208.

The previous prime is 22320021439. The next prime is 22320021457. The reversal of 22320021443 is 34412002322.

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 22320021443 - 2² = 22320021439 is a prime.

It is a super-3 number, since 3×22320021443³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22320021413) 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, 1695443 + ... + 1708556.

It is an arithmetic number, because the mean of its divisors is an integer number (2859360000).

Almost surely, 2^22320021443 is an apocalyptic number.

22320021443 is a deficient number, since it is larger than the sum of its proper divisors (554858557).

22320021443 is an equidigital number, since it uses as much as digits as its factorization.

22320021443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404161.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 22320021443 its reverse (34412002322), we get a palindrome (56732023765).

The spelling of 22320021443 in words is "twenty-two billion, three hundred twenty million, twenty-one thousand, four hundred forty-three".