213211231213 has 8 divisors (see below), whose sum is σ = 222685235136. Its totient is φ = 203754223200.

The previous prime is 213211231199. The next prime is 213211231217. The reversal of 213211231213 is 312132112312.

213211231213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213211231213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213211231217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4223328 + ... + 4273513.

It is an arithmetic number, because the mean of its divisors is an integer number (27835654392).

Almost surely, 2^213211231213 is an apocalyptic number.

213211231213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

213211231213 is a deficient number, since it is larger than the sum of its proper divisors (9474003923).

213211231213 is a wasteful number, since it uses less digits than its factorization.

213211231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8497955.

The product of its digits is 432, while the sum is 22.

Adding to 213211231213 its reverse (312132112312), we get a palindrome (525343343525).

The spelling of 213211231213 in words is "two hundred thirteen billion, two hundred eleven million, two hundred thirty-one thousand, two hundred thirteen".