1211202201191 has 2 divisors, whose sum is σ = 1211202201192. Its totient is φ = 1211202201190.

The previous prime is 1211202201169. The next prime is 1211202201203. The reversal of 1211202201191 is 1911022021121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1911022021121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211202201191 - 2¹⁰ = 1211202200167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211202201691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605601100595 + 605601100596.

It is an arithmetic number, because the mean of its divisors is an integer number (605601100596).

Almost surely, 2^{1211202201191} is an apocalyptic number.

1211202201191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211202201191 is an equidigital number, since it uses as much as digits as its factorization.

1211202201191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1211202201191 in words is "one trillion, two hundred eleven billion, two hundred two million, two hundred one thousand, one hundred ninety-one".