213210211213 has 4 divisors (see below), whose sum is σ = 213320513308. Its totient is φ = 213099909120.

The previous prime is 213210211141. The next prime is 213210211243. The reversal of 213210211213 is 312112012312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92466470889 + 120743740324 = 304083^2 + 347482^2 .

It is a cyclic number.

It is not a de Polignac number, because 213210211213 - 2⁹ = 213210210701 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 (213210211243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55148148 + ... + 55152013.

It is an arithmetic number, because the mean of its divisors is an integer number (53330128327).

Almost surely, 2^213210211213 is an apocalyptic number.

It is an amenable number.

213210211213 is a deficient number, since it is larger than the sum of its proper divisors (110302095).

213210211213 is a wasteful number, since it uses less digits than its factorization.

213210211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110302094.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 213210211213 its reverse (312112012312), we get a palindrome (525322223525).

The spelling of 213210211213 in words is "two hundred thirteen billion, two hundred ten million, two hundred eleven thousand, two hundred thirteen".