22220143 has 8 divisors (see below), whose sum is σ = 24756480. Its totient is φ = 19769880.

The previous prime is 22220137. The next prime is 22220147. The reversal of 22220143 is 34102222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22220143 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 (22220147) 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, 20973 + ... + 22006.

It is an arithmetic number, because the mean of its divisors is an integer number (3094560).

Almost surely, 2^22220143 is an apocalyptic number.

22220143 is a deficient number, since it is larger than the sum of its proper divisors (2536337).

22220143 is a wasteful number, since it uses less digits than its factorization.

22220143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43037.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22220143 is about 4713.8246679316. The cubic root of 22220143 is about 281.1354530741.

Adding to 22220143 its reverse (34102222), we get a palindrome (56322365).

The spelling of 22220143 in words is "twenty-two million, two hundred twenty thousand, one hundred forty-three".