213111013213 has 16 divisors (see below), whose sum is σ = 244903067136. Its totient is φ = 181656529920.

The previous prime is 213111013153. The next prime is 213111013279. The reversal of 213111013213 is 312310111312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213111013213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213111053213) 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, 4057983 + ... + 4110163.

It is an arithmetic number, because the mean of its divisors is an integer number (15306441696).

Almost surely, 2^213111013213 is an apocalyptic number.

It is an amenable number.

213111013213 is a deficient number, since it is larger than the sum of its proper divisors (31792053923).

213111013213 is a wasteful number, since it uses less digits than its factorization.

213111013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55404.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 213111013213 its reverse (312310111312), we get a palindrome (525421124525).

The spelling of 213111013213 in words is "two hundred thirteen billion, one hundred eleven million, thirteen thousand, two hundred thirteen".