22320144021 has 8 divisors (see below), whose sum is σ = 34011648064. Its totient is φ = 12754368000.

The previous prime is 22320144017. The next prime is 22320144059. The reversal of 22320144021 is 12044102322.

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

It is not a de Polignac number, because 22320144021 - 2² = 22320144017 is a prime.

It is a super-3 number, since 3×22320144021³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1062864001 = 22320144021 / (2 + 2 + 3 + 2 + 0 + 1 + 4 + 4 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22320144001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531431980 + ... + 531432021.

It is an arithmetic number, because the mean of its divisors is an integer number (4251456008).

Almost surely, 2^22320144021 is an apocalyptic number.

22320144021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22320144021 is a deficient number, since it is larger than the sum of its proper divisors (11691504043).

22320144021 is a wasteful number, since it uses less digits than its factorization.

22320144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062864011.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22320144021 its reverse (12044102322), we get a palindrome (34364246343).

The spelling of 22320144021 in words is "twenty-two billion, three hundred twenty million, one hundred forty-four thousand, twenty-one".