213233234121 has 12 divisors (see below), whose sum is σ = 308041883760. Its totient is φ = 142137801720.

The previous prime is 213233234099. The next prime is 213233234141. The reversal of 213233234121 is 121432332312.

213233234121 is a `hidden beast` number, since 2 + 1 + 323 + 323 + 4 + 12 + 1 = 666.

It is not a de Polignac number, because 213233234121 - 2¹⁴ = 213233217737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213233234141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1397415 + ... + 1542476.

It is an arithmetic number, because the mean of its divisors is an integer number (25670156980).

Almost surely, 2^213233234121 is an apocalyptic number.

It is an amenable number.

213233234121 is a deficient number, since it is larger than the sum of its proper divisors (94808649639).

213233234121 is a wasteful number, since it uses less digits than its factorization.

213233234121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947956 (or 2947953 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 213233234121 its reverse (121432332312), we get a palindrome (334665566433).

The spelling of 213233234121 in words is "two hundred thirteen billion, two hundred thirty-three million, two hundred thirty-four thousand, one hundred twenty-one".