2220423443 has 4 divisors (see below), whose sum is σ = 2537626800. Its totient is φ = 1903220088.

The previous prime is 2220423437. The next prime is 2220423451. The reversal of 2220423443 is 3443240222.

It is a happy number.

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

It is not a de Polignac number, because 2220423443 - 2¹² = 2220419347 is a prime.

It is a super-3 number, since 3×2220423443³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220423463) 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, 158601668 + ... + 158601681.

It is an arithmetic number, because the mean of its divisors is an integer number (634406700).

Almost surely, 2^2220423443 is an apocalyptic number.

2220423443 is a deficient number, since it is larger than the sum of its proper divisors (317203357).

2220423443 is an equidigital number, since it uses as much as digits as its factorization.

2220423443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317203356.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 2220423443 is about 47121.3692818874. The cubic root of 2220423443 is about 1304.6036862161.

Adding to 2220423443 its reverse (3443240222), we get a palindrome (5663663665).

The spelling of 2220423443 in words is "two billion, two hundred twenty million, four hundred twenty-three thousand, four hundred forty-three".