22217143 has 8 divisors (see below), whose sum is σ = 24147200. Its totient is φ = 20318688.

The previous prime is 22217141. The next prime is 22217183. The reversal of 22217143 is 34171222.

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

It is not a de Polignac number, because 22217143 - 2¹ = 22217141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22217141) 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, 6423 + ... + 9256.

It is an arithmetic number, because the mean of its divisors is an integer number (3018400).

Almost surely, 2^22217143 is an apocalyptic number.

22217143 is a deficient number, since it is larger than the sum of its proper divisors (1930057).

22217143 is a wasteful number, since it uses less digits than its factorization.

22217143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15801.

The product of its digits is 672, while the sum is 22.

The square root of 22217143 is about 4713.5064442515. The cubic root of 22217143 is about 281.1228002254.

Adding to 22217143 its reverse (34171222), we get a palindrome (56388365).

The spelling of 22217143 in words is "twenty-two million, two hundred seventeen thousand, one hundred forty-three".