22143312021 has 8 divisors (see below), whose sum is σ = 30244523904. Its totient is φ = 14402154080.

The previous prime is 22143312019. The next prime is 22143312043. The reversal of 22143312021 is 12021334122.

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 22143312021 - 2¹ = 22143312019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22143312001) 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, 90013341 + ... + 90013586.

It is an arithmetic number, because the mean of its divisors is an integer number (3780565488).

Almost surely, 2^22143312021 is an apocalyptic number.

It is an amenable number.

22143312021 is a deficient number, since it is larger than the sum of its proper divisors (8101211883).

22143312021 is a wasteful number, since it uses less digits than its factorization.

22143312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180026971.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 22143312021 its reverse (12021334122), we get a palindrome (34164646143).

The spelling of 22143312021 in words is "twenty-two billion, one hundred forty-three million, three hundred twelve thousand, twenty-one".