2216521106 has 4 divisors (see below), whose sum is σ = 3324781662. Its totient is φ = 1108260552.

The previous prime is 2216521079. The next prime is 2216521117. The reversal of 2216521106 is 6011256122.

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

It can be written as a sum of positive squares in only one way, i.e., 1624815481 + 591705625 = 40309^2 + 24325^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554130275 + ... + 554130278.

Almost surely, 2^2216521106 is an apocalyptic number.

2216521106 is a deficient number, since it is larger than the sum of its proper divisors (1108260556).

2216521106 is a wasteful number, since it uses less digits than its factorization.

2216521106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108260555.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 2216521106 is about 47079.9437765170. The cubic root of 2216521106 is about 1303.8389689272.

Adding to 2216521106 its reverse (6011256122), we get a palindrome (8227777228).

The spelling of 2216521106 in words is "two billion, two hundred sixteen million, five hundred twenty-one thousand, one hundred six".