22143321 has 32 divisors (see below), whose sum is σ = 34151040. Its totient is φ = 14169600.

The previous prime is 22143311. The next prime is 22143343. The reversal of 22143321 is 12334122.

It is not a de Polignac number, because 22143321 - 2⁷ = 22143193 is a prime.

22143321 is a modest number, since divided by 3321 gives 2214 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 22143294 and 22143303.

It is not an unprimeable number, because it can be changed into a prime (22143301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91761 + ... + 92001.

It is an arithmetic number, because the mean of its divisors is an integer number (1067220).

Almost surely, 2^22143321 is an apocalyptic number.

It is an amenable number.

22143321 is a deficient number, since it is larger than the sum of its proper divisors (12007719).

22143321 is a wasteful number, since it uses less digits than its factorization.

22143321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 368 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 22143321 is about 4705.6690278854. The cubic root of 22143321 is about 280.8110878447.

Adding to 22143321 its reverse (12334122), we get a palindrome (34477443).

The spelling of 22143321 in words is "twenty-two million, one hundred forty-three thousand, three hundred twenty-one".