212312141 has 2 divisors, whose sum is σ = 212312142. Its totient is φ = 212312140.

The previous prime is 212312129. The next prime is 212312143. The reversal of 212312141 is 141213212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194714116 + 17598025 = 13954^2 + 4195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212312141 is a prime.

Together with 212312143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212312143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106156070 + 106156071.

It is an arithmetic number, because the mean of its divisors is an integer number (106156071).

Almost surely, 2^212312141 is an apocalyptic number.

It is an amenable number.

212312141 is a deficient number, since it is larger than the sum of its proper divisors (1).

212312141 is an equidigital number, since it uses as much as digits as its factorization.

212312141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 17.

The square root of 212312141 is about 14570.9348018581. The cubic root of 212312141 is about 596.5656958376.

Adding to 212312141 its reverse (141213212), we get a palindrome (353525353).

The spelling of 212312141 in words is "two hundred twelve million, three hundred twelve thousand, one hundred forty-one".