2213141221 has 4 divisors (see below), whose sum is σ = 2220961792. Its totient is φ = 2205320652.

The previous prime is 2213141171. The next prime is 2213141239. The reversal of 2213141221 is 1221413122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2213141221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213141251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3909861 + ... + 3910426.

It is an arithmetic number, because the mean of its divisors is an integer number (555240448).

Almost surely, 2^2213141221 is an apocalyptic number.

It is an amenable number.

2213141221 is a deficient number, since it is larger than the sum of its proper divisors (7820571).

2213141221 is an equidigital number, since it uses as much as digits as its factorization.

2213141221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7820570.

The product of its digits is 192, while the sum is 19.

The square root of 2213141221 is about 47044.0349141100. The cubic root of 2213141221 is about 1303.1759077015.

Adding to 2213141221 its reverse (1221413122), we get a palindrome (3434554343).

The spelling of 2213141221 in words is "two billion, two hundred thirteen million, one hundred forty-one thousand, two hundred twenty-one".