2220021443 has 4 divisors (see below), whose sum is σ = 2242908360. Its totient is φ = 2197134528.

The previous prime is 2220021409. The next prime is 2220021473. The reversal of 2220021443 is 3441200222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2220021443 - 2¹⁴ = 2220005059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220021473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11443313 + ... + 11443506.

It is an arithmetic number, because the mean of its divisors is an integer number (560727090).

Almost surely, 2^2220021443 is an apocalyptic number.

2220021443 is a deficient number, since it is larger than the sum of its proper divisors (22886917).

2220021443 is an equidigital number, since it uses as much as digits as its factorization.

2220021443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22886916.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2220021443 is about 47117.1035081742. The cubic root of 2220021443 is about 1304.5249501328.

Adding to 2220021443 its reverse (3441200222), we get a palindrome (5661221665).

The spelling of 2220021443 in words is "two billion, two hundred twenty million, twenty-one thousand, four hundred forty-three".