2216122644 has 24 divisors (see below), whose sum is σ = 5173682080. Its totient is φ = 738317664.

The previous prime is 2216122639. The next prime is 2216122663. The reversal of 2216122644 is 4462216122.

It is a super-2 number, since 2×2216122644² = 9822399146499101472, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24574 + ... + 70965.

Almost surely, 2^2216122644 is an apocalyptic number.

It is an amenable number.

2216122644 is an abundant number, since it is smaller than the sum of its proper divisors (2957559436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2216122644 is a wasteful number, since it uses less digits than its factorization.

2216122644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97479 (or 97477 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 2216122644 is about 47075.7118268009. The cubic root of 2216122644 is about 1303.7608342598.

Adding to 2216122644 its reverse (4462216122), we get a palindrome (6678338766).

The spelling of 2216122644 in words is "two billion, two hundred sixteen million, one hundred twenty-two thousand, six hundred forty-four".