1211101001219 has 2 divisors, whose sum is σ = 1211101001220. Its totient is φ = 1211101001218.

The previous prime is 1211101001213. The next prime is 1211101001237. The reversal of 1211101001219 is 9121001011121.

It is a weak prime.

It is an emirp because it is prime and its reverse (9121001011121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211101001219 - 2⁴ = 1211101001203 is a prime.

It is a super-2 number, since 2×1211101001219² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1211101001219.

It is not a weakly prime, because it can be changed into another prime (1211101001213) 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, 605550500609 + 605550500610.

It is an arithmetic number, because the mean of its divisors is an integer number (605550500610).

Almost surely, 2^{1211101001219} is an apocalyptic number.

1211101001219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211101001219 is an equidigital number, since it uses as much as digits as its factorization.

1211101001219 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 20.

The spelling of 1211101001219 in words is "one trillion, two hundred eleven billion, one hundred one million, one thousand, two hundred nineteen".