213334221 has 8 divisors (see below), whose sum is σ = 284597280. Its totient is φ = 142146992.

The previous prime is 213334217. The next prime is 213334243. The reversal of 213334221 is 122433312.

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 213334221 - 2² = 213334217 is a prime.

It is a super-2 number, since 2×213334221² = 91022979699353682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213334201) 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, 12030 + ... + 23903.

It is an arithmetic number, because the mean of its divisors is an integer number (35574660).

Almost surely, 2^213334221 is an apocalyptic number.

It is an amenable number.

213334221 is a deficient number, since it is larger than the sum of its proper divisors (71263059).

213334221 is a wasteful number, since it uses less digits than its factorization.

213334221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37915.

The product of its digits is 864, while the sum is 21.

The square root of 213334221 is about 14605.9652539639. The cubic root of 213334221 is about 597.5214616218.

Adding to 213334221 its reverse (122433312), we get a palindrome (335767533).

Subtracting from 213334221 its reverse (122433312), we obtain a palindrome (90900909).

The spelling of 213334221 in words is "two hundred thirteen million, three hundred thirty-four thousand, two hundred twenty-one".