2216221066 has 16 divisors (see below), whose sum is σ = 3513252960. Its totient is φ = 1045602000.

The previous prime is 2216221061. The next prime is 2216221067. The reversal of 2216221066 is 6601226122.

It is not an unprimeable number, because it can be changed into a prime (2216221061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106641 + ... + 125716.

It is an arithmetic number, because the mean of its divisors is an integer number (219578310).

Almost surely, 2^2216221066 is an apocalyptic number.

2216221066 is a deficient number, since it is larger than the sum of its proper divisors (1297031894).

2216221066 is a wasteful number, since it uses less digits than its factorization.

2216221066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232629.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2216221066 is about 47076.7571737901. The cubic root of 2216221066 is about 1303.7801347634.

Adding to 2216221066 its reverse (6601226122), we get a palindrome (8817447188).

The spelling of 2216221066 in words is "two billion, two hundred sixteen million, two hundred twenty-one thousand, sixty-six".