213123132212 has 12 divisors (see below), whose sum is σ = 394904627460. Its totient is φ = 100293238656.

The previous prime is 213123132181. The next prime is 213123132217. The reversal of 213123132212 is 212231321312.

213123132212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 120606176656 + 92516955556 = 347284^2 + 304166^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213123132217) 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 3 ways as a sum of consecutive naturals, for example, 1567081787 + ... + 1567081922.

It is an arithmetic number, because the mean of its divisors is an integer number (32908718955).

Almost surely, 2^213123132212 is an apocalyptic number.

It is an amenable number.

213123132212 is a deficient number, since it is larger than the sum of its proper divisors (181781495248).

213123132212 is a wasteful number, since it uses less digits than its factorization.

213123132212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134163730 (or 3134163728 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 213123132212 its reverse (212231321312), we get a palindrome (425354453524).

The spelling of 213123132212 in words is "two hundred thirteen billion, one hundred twenty-three million, one hundred thirty-two thousand, two hundred twelve".