212331131212 has 24 divisors (see below), whose sum is σ = 380262172752. Its totient is φ = 103685332800.

The previous prime is 212331131203. The next prime is 212331131219. The reversal of 212331131212 is 212131133212.

It is not an unprimeable number, because it can be changed into a prime (212331131219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1647762 + ... + 1771942.

It is an arithmetic number, because the mean of its divisors is an integer number (15844257198).

Almost surely, 2^212331131212 is an apocalyptic number.

It is an amenable number.

212331131212 is a deficient number, since it is larger than the sum of its proper divisors (167931041540).

212331131212 is a wasteful number, since it uses less digits than its factorization.

212331131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134169 (or 134167 counting only the distinct ones).

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

Adding to 212331131212 its reverse (212131133212), we get a palindrome (424462264424).

The spelling of 212331131212 in words is "two hundred twelve billion, three hundred thirty-one million, one hundred thirty-one thousand, two hundred twelve".