212111011212143 has 2 divisors, whose sum is σ = 212111011212144. Its totient is φ = 212111011212142.

The previous prime is 212111011212127. The next prime is 212111011212241. The reversal of 212111011212143 is 341212110111212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212111011212143 - 2⁴ = 212111011212127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212111011212643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055505606071 + 106055505606072.

It is an arithmetic number, because the mean of its divisors is an integer number (106055505606072).

Almost surely, 2^{212111011212143} is an apocalyptic number.

212111011212143 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111011212143 is an equidigital number, since it uses as much as digits as its factorization.

212111011212143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 212111011212143 its reverse (341212110111212), we get a palindrome (553323121323355).

The spelling of 212111011212143 in words is "two hundred twelve trillion, one hundred eleven billion, eleven million, two hundred twelve thousand, one hundred forty-three".