1212201221093 has 2 divisors, whose sum is σ = 1212201221094. Its totient is φ = 1212201221092.

The previous prime is 1212201221047. The next prime is 1212201221123. The reversal of 1212201221093 is 3901221022121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087427668804 + 124773552289 = 1042798^2 + 353233^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212201221093 - 2³² = 1207906253797 is a prime.

It is a super-2 number, since 2×1212201221093² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212201229093) 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, 606100610546 + 606100610547.

It is an arithmetic number, because the mean of its divisors is an integer number (606100610547).

Almost surely, 2^{1212201221093} is an apocalyptic number.

It is an amenable number.

1212201221093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212201221093 is an equidigital number, since it uses as much as digits as its factorization.

1212201221093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 1212201221093 in words is "one trillion, two hundred twelve billion, two hundred one million, two hundred twenty-one thousand, ninety-three".