1210200001091 has 2 divisors, whose sum is σ = 1210200001092. Its totient is φ = 1210200001090.

The previous prime is 1210200001067. The next prime is 1210200001123. The reversal of 1210200001091 is 1901000020121.

It is a weak prime.

It is an emirp because it is prime and its reverse (1901000020121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1210200001091 - 2¹⁰ = 1210200000067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1210200001891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605100000545 + 605100000546.

It is an arithmetic number, because the mean of its divisors is an integer number (605100000546).

Almost surely, 2^{1210200001091} is an apocalyptic number.

1210200001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210200001091 is an equidigital number, since it uses as much as digits as its factorization.

1210200001091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 1210200001091 in words is "one trillion, two hundred ten billion, two hundred million, one thousand, ninety-one".