1211210664143 has 2 divisors, whose sum is σ = 1211210664144. Its totient is φ = 1211210664142.

The previous prime is 1211210664137. The next prime is 1211210664163. The reversal of 1211210664143 is 3414660121121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211210664143 - 2⁴ = 1211210664127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211210664133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605605332071 + 605605332072.

It is an arithmetic number, because the mean of its divisors is an integer number (605605332072).

Almost surely, 2^{1211210664143} is an apocalyptic number.

1211210664143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211210664143 is an equidigital number, since it uses as much as digits as its factorization.

1211210664143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

Adding to 1211210664143 its reverse (3414660121121), we get a palindrome (4625870785264).

The spelling of 1211210664143 in words is "one trillion, two hundred eleven billion, two hundred ten million, six hundred sixty-four thousand, one hundred forty-three".