1212210838843 has 2 divisors, whose sum is σ = 1212210838844. Its totient is φ = 1212210838842.

The previous prime is 1212210838841. The next prime is 1212210838859. The reversal of 1212210838843 is 3488380122121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212210838843 - 2¹ = 1212210838841 is a prime.

Together with 1212210838841, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1212210838843.

It is not a weakly prime, because it can be changed into another prime (1212210838841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105419421 + 606105419422.

It is an arithmetic number, because the mean of its divisors is an integer number (606105419422).

Almost surely, 2^{1212210838843} is an apocalyptic number.

1212210838843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212210838843 is an equidigital number, since it uses as much as digits as its factorization.

1212210838843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 1212210838843 in words is "one trillion, two hundred twelve billion, two hundred ten million, eight hundred thirty-eight thousand, eight hundred forty-three".