213233110221 has 16 divisors (see below), whose sum is σ = 292468233024. Its totient is φ = 138089153664.

The previous prime is 213233110169. The next prime is 213233110241. The reversal of 213233110221 is 122011332312.

It is not a de Polignac number, because 213233110221 - 2¹⁰ = 213233109197 is a prime.

It is a super-2 number, since 2×213233110221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213233110241) 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, 1488255 + ... + 1625228.

It is an arithmetic number, because the mean of its divisors is an integer number (18279264564).

Almost surely, 2^213233110221 is an apocalyptic number.

It is an amenable number.

213233110221 is a deficient number, since it is larger than the sum of its proper divisors (79235122803).

213233110221 is a wasteful number, since it uses less digits than its factorization.

213233110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114140.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213233110221 its reverse (122011332312), we get a palindrome (335244442533).

The spelling of 213233110221 in words is "two hundred thirteen billion, two hundred thirty-three million, one hundred ten thousand, two hundred twenty-one".