212144331122279 has 2 divisors, whose sum is σ = 212144331122280. Its totient is φ = 212144331122278.

The previous prime is 212144331122237. The next prime is 212144331122327. The reversal of 212144331122279 is 972221133441212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212144331122279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212144331122209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106072165561139 + 106072165561140.

It is an arithmetic number, because the mean of its divisors is an integer number (106072165561140).

Almost surely, 2^{212144331122279} is an apocalyptic number.

212144331122279 is a deficient number, since it is larger than the sum of its proper divisors (1).

212144331122279 is an equidigital number, since it uses as much as digits as its factorization.

212144331122279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The spelling of 212144331122279 in words is "two hundred twelve trillion, one hundred forty-four billion, three hundred thirty-one million, one hundred twenty-two thousand, two hundred seventy-nine".