2222216643 has 4 divisors (see below), whose sum is σ = 2962955528. Its totient is φ = 1481477760.

The previous prime is 2222216639. The next prime is 2222216677. The reversal of 2222216643 is 3466122222.

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

It is not a de Polignac number, because 2222216643 - 2² = 2222216639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2222216643.

It is not an unprimeable number, because it can be changed into a prime (2222211643) 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, 370369438 + ... + 370369443.

It is an arithmetic number, because the mean of its divisors is an integer number (740738882).

Almost surely, 2^2222216643 is an apocalyptic number.

2222216643 is a deficient number, since it is larger than the sum of its proper divisors (740738885).

2222216643 is an equidigital number, since it uses as much as digits as its factorization.

2222216643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740738884.

The product of its digits is 13824, while the sum is 30.

The square root of 2222216643 is about 47140.3929024780. The cubic root of 2222216643 is about 1304.9547882929.

Adding to 2222216643 its reverse (3466122222), we get a palindrome (5688338865).

The spelling of 2222216643 in words is "two billion, two hundred twenty-two million, two hundred sixteen thousand, six hundred forty-three".