212133243340331 has 4 divisors (see below), whose sum is σ = 224611669419192. Its totient is φ = 199654817261472.

The previous prime is 212133243340201. The next prime is 212133243340387. The reversal of 212133243340331 is 133043342331212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212133243340331 - 2²² = 212133239146027 is a prime.

It is a super-2 number, since 2×212133243340331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212133243340291 and 212133243340300.

It is not an unprimeable number, because it can be changed into a prime (212133243346331) 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, 6239213039405 + ... + 6239213039438.

It is an arithmetic number, because the mean of its divisors is an integer number (56152917354798).

Almost surely, 2^{212133243340331} is an apocalyptic number.

212133243340331 is a deficient number, since it is larger than the sum of its proper divisors (12478426078861).

212133243340331 is a wasteful number, since it uses less digits than its factorization.

212133243340331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12478426078860.

The product of its (nonzero) digits is 93312, while the sum is 35.

Adding to 212133243340331 its reverse (133043342331212), we get a palindrome (345176585671543).

The spelling of 212133243340331 in words is "two hundred twelve trillion, one hundred thirty-three billion, two hundred forty-three million, three hundred forty thousand, three hundred thirty-one".