212213131213 has 4 divisors (see below), whose sum is σ = 212219967808. Its totient is φ = 212206294620.

The previous prime is 212213131177. The next prime is 212213131219. The reversal of 212213131213 is 312131312212.

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 212213131213 - 2¹³ = 212213123021 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 (212213131219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3371523 + ... + 3433888.

It is an arithmetic number, because the mean of its divisors is an integer number (53054991952).

Almost surely, 2^212213131213 is an apocalyptic number.

It is an amenable number.

212213131213 is a deficient number, since it is larger than the sum of its proper divisors (6836595).

212213131213 is an equidigital number, since it uses as much as digits as its factorization.

212213131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6836594.

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

Adding to 212213131213 its reverse (312131312212), we get a palindrome (524344443425).

The spelling of 212213131213 in words is "two hundred twelve billion, two hundred thirteen million, one hundred thirty-one thousand, two hundred thirteen".