2213185321 has 4 divisors (see below), whose sum is σ = 2213411152. Its totient is φ = 2212959492.

The previous prime is 2213185309. The next prime is 2213185363. The reversal of 2213185321 is 1235813122.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1235813122 = 2 ⋅617906561.

It is a cyclic number.

It is not a de Polignac number, because 2213185321 - 2¹³ = 2213177129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2213185321.

It is not an unprimeable number, because it can be changed into a prime (2213185921) 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, 97515 + ... + 118048.

It is an arithmetic number, because the mean of its divisors is an integer number (553352788).

Almost surely, 2^2213185321 is an apocalyptic number.

It is an amenable number.

2213185321 is a deficient number, since it is larger than the sum of its proper divisors (225831).

2213185321 is a wasteful number, since it uses less digits than its factorization.

2213185321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225830.

The product of its digits is 2880, while the sum is 28.

The square root of 2213185321 is about 47044.5036215709. The cubic root of 2213185321 is about 1303.1845635245.

Adding to 2213185321 its reverse (1235813122), we get a palindrome (3448998443).

The spelling of 2213185321 in words is "two billion, two hundred thirteen million, one hundred eighty-five thousand, three hundred twenty-one".