213221113 has 8 divisors (see below), whose sum is σ = 245917760. Its totient is φ = 181083600.

The previous prime is 213221087. The next prime is 213221117. The reversal of 213221113 is 311122312.

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

It is a cyclic number.

It is not a de Polignac number, because 213221113 - 2¹⁷ = 213090041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213221117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138963 + ... + 140488.

It is an arithmetic number, because the mean of its divisors is an integer number (30739720).

Almost surely, 2^213221113 is an apocalyptic number.

It is an amenable number.

213221113 is a deficient number, since it is larger than the sum of its proper divisors (32696647).

213221113 is a wasteful number, since it uses less digits than its factorization.

213221113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279567.

The product of its digits is 72, while the sum is 16.

The square root of 213221113 is about 14602.0927609709. The cubic root of 213221113 is about 597.4158426781.

Adding to 213221113 its reverse (311122312), we get a palindrome (524343425).

The spelling of 213221113 in words is "two hundred thirteen million, two hundred twenty-one thousand, one hundred thirteen".