212133231113 has 4 divisors (see below), whose sum is σ = 212149553280. Its totient is φ = 212116908948.

The previous prime is 212133231091. The next prime is 212133231179. The reversal of 212133231113 is 311132331212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212133231113 - 2⁶ = 212133231049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212133233113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8141573 + ... + 8167586.

It is an arithmetic number, because the mean of its divisors is an integer number (53037388320).

Almost surely, 2^212133231113 is an apocalyptic number.

It is an amenable number.

212133231113 is a deficient number, since it is larger than the sum of its proper divisors (16322167).

212133231113 is a wasteful number, since it uses less digits than its factorization.

212133231113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16322166.

The product of its digits is 648, while the sum is 23.

Adding to 212133231113 its reverse (311132331212), we get a palindrome (523265562325).

The spelling of 212133231113 in words is "two hundred twelve billion, one hundred thirty-three million, two hundred thirty-one thousand, one hundred thirteen".