212144421411947 has 2 divisors, whose sum is σ = 212144421411948. Its totient is φ = 212144421411946.

The previous prime is 212144421411941. The next prime is 212144421412013. The reversal of 212144421411947 is 749114124441212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212144421411947 - 2³⁸ = 211869543505003 is a prime.

It is not a weakly prime, because it can be changed into another prime (212144421411941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106072210705973 + 106072210705974.

It is an arithmetic number, because the mean of its divisors is an integer number (106072210705974).

Almost surely, 2^{212144421411947} is an apocalyptic number.

212144421411947 is a deficient number, since it is larger than the sum of its proper divisors (1).

212144421411947 is an equidigital number, since it uses as much as digits as its factorization.

212144421411947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 516096, while the sum is 47.

The spelling of 212144421411947 in words is "two hundred twelve trillion, one hundred forty-four billion, four hundred twenty-one million, four hundred eleven thousand, nine hundred forty-seven".