212144196904481 has 2 divisors, whose sum is σ = 212144196904482. Its totient is φ = 212144196904480.

The previous prime is 212144196904411. The next prime is 212144196904513. The reversal of 212144196904481 is 184409691441212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204281130363025 + 7863066541456 = 14292695^2 + 2804116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212144196904481 is a prime.

It is a super-2 number, since 2×212144196904481² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (212144196904411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106072098452240 + 106072098452241.

It is an arithmetic number, because the mean of its divisors is an integer number (106072098452241).

Almost surely, 2^{212144196904481} is an apocalyptic number.

It is an amenable number.

212144196904481 is a deficient number, since it is larger than the sum of its proper divisors (1).

212144196904481 is an equidigital number, since it uses as much as digits as its factorization.

212144196904481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 212144196904481 in words is "two hundred twelve trillion, one hundred forty-four billion, one hundred ninety-six million, nine hundred four thousand, four hundred eighty-one".