212131331123333 has 4 divisors (see below), whose sum is σ = 213011544115788. Its totient is φ = 211251118130880.

The previous prime is 212131331123267. The next prime is 212131331123359. The reversal of 212131331123333 is 333321133131212.

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 106165862757124 + 105965468366209 = 10303682^2 + 10293953^2 .

It is a cyclic number.

It is not a de Polignac number, because 212131331123333 - 2⁸ = 212131331123077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212131331123333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212131331128333) 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, 440106495866 + ... + 440106496347.

It is an arithmetic number, because the mean of its divisors is an integer number (53252886028947).

Almost surely, 2^{212131331123333} is an apocalyptic number.

It is an amenable number.

212131331123333 is a deficient number, since it is larger than the sum of its proper divisors (880212992455).

212131331123333 is an equidigital number, since it uses as much as digits as its factorization.

212131331123333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880212992454.

The product of its digits is 17496, while the sum is 32.

Adding to 212131331123333 its reverse (333321133131212), we get a palindrome (545452464254545).

The spelling of 212131331123333 in words is "two hundred twelve trillion, one hundred thirty-one billion, three hundred thirty-one million, one hundred twenty-three thousand, three hundred thirty-three".