213232032221 has 16 divisors (see below), whose sum is σ = 230031809280. Its totient is φ = 196489254720.

The previous prime is 213232032199. The next prime is 213232032283. The reversal of 213232032221 is 122230232312.

It is a cyclic number.

It is not a de Polignac number, because 213232032221 - 2¹⁰ = 213232031197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213232032821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42313820 + ... + 42318858.

It is an arithmetic number, because the mean of its divisors is an integer number (14376988080).

Almost surely, 2^213232032221 is an apocalyptic number.

It is an amenable number.

213232032221 is a deficient number, since it is larger than the sum of its proper divisors (16799777059).

213232032221 is a wasteful number, since it uses less digits than its factorization.

213232032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10036.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 213232032221 its reverse (122230232312), we get a palindrome (335462264533).

The spelling of 213232032221 in words is "two hundred thirteen billion, two hundred thirty-two million, thirty-two thousand, two hundred twenty-one".