2216184621 has 32 divisors (see below), whose sum is σ = 3423129600. Its totient is φ = 1249214400.

The previous prime is 2216184599. The next prime is 2216184623. The reversal of 2216184621 is 1264816122.

It is a happy number.

It is not a de Polignac number, because 2216184621 - 2⁷ = 2216184493 is a prime.

It is a super-2 number, since 2×2216184621² = 9822948548713827282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216184623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 545046 + ... + 549096.

It is an arithmetic number, because the mean of its divisors is an integer number (106972800).

Almost surely, 2^2216184621 is an apocalyptic number.

2216184621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2216184621 is a deficient number, since it is larger than the sum of its proper divisors (1206944979).

2216184621 is a wasteful number, since it uses less digits than its factorization.

2216184621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4409.

The product of its digits is 9216, while the sum is 33.

The square root of 2216184621 is about 47076.3700915863. The cubic root of 2216184621 is about 1303.7729879843.

The spelling of 2216184621 in words is "two billion, two hundred sixteen million, one hundred eighty-four thousand, six hundred twenty-one".