213131112222112 has 96 divisors (see below), whose sum is σ = 479697437278080. Its totient is φ = 91312875970560.

The previous prime is 213131112222071. The next prime is 213131112222113. The reversal of 213131112222112 is 211222211131312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (213131112222113) 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, 14462306008 + ... + 14462320744.

It is an arithmetic number, because the mean of its divisors is an integer number (4996848304980).

Almost surely, 2^{213131112222112} is an apocalyptic number.

It is an amenable number.

213131112222112 is an abundant number, since it is smaller than the sum of its proper divisors (266566325055968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213131112222112 is a wasteful number, since it uses less digits than its factorization.

213131112222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30894 (or 30886 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

Adding to 213131112222112 its reverse (211222211131312), we get a palindrome (424353323353424).

The spelling of 213131112222112 in words is "two hundred thirteen trillion, one hundred thirty-one billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twelve".