2221213211 has 8 divisors (see below), whose sum is σ = 2626065120. Its totient is φ = 1838245248.

The previous prime is 2221213187. The next prime is 2221213213. The reversal of 2221213211 is 1123121222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221213211 - 2¹⁴ = 2221196827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221213211.

It is not an unprimeable number, because it can be changed into a prime (2221213213) 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, 5470766 + ... + 5471171.

It is an arithmetic number, because the mean of its divisors is an integer number (328258140).

Almost surely, 2^2221213211 is an apocalyptic number.

2221213211 is a deficient number, since it is larger than the sum of its proper divisors (404851909).

2221213211 is a wasteful number, since it uses less digits than its factorization.

2221213211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10941973.

The product of its digits is 96, while the sum is 17.

The square root of 2221213211 is about 47129.7486838196. The cubic root of 2221213211 is about 1304.7583432198.

Adding to 2221213211 its reverse (1123121222), we get a palindrome (3344334433).

The spelling of 2221213211 in words is "two billion, two hundred twenty-one million, two hundred thirteen thousand, two hundred eleven".