131212330211 has 2 divisors, whose sum is σ = 131212330212. Its totient is φ = 131212330210.

The previous prime is 131212330199. The next prime is 131212330247. The reversal of 131212330211 is 112033212131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131212330211 is a prime.

It is not a weakly prime, because it can be changed into another prime (131212330811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65606165105 + 65606165106.

It is an arithmetic number, because the mean of its divisors is an integer number (65606165106).

Almost surely, 2^131212330211 is an apocalyptic number.

131212330211 is a deficient number, since it is larger than the sum of its proper divisors (1).

131212330211 is an equidigital number, since it uses as much as digits as its factorization.

131212330211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131212330211 its reverse (112033212131), we get a palindrome (243245542342).

The spelling of 131212330211 in words is "one hundred thirty-one billion, two hundred twelve million, three hundred thirty thousand, two hundred eleven".