1211201100271 has 2 divisors, whose sum is σ = 1211201100272. Its totient is φ = 1211201100270.

The previous prime is 1211201100259. The next prime is 1211201100287. The reversal of 1211201100271 is 1720011021121.

It is a weak prime.

It is an emirp because it is prime and its reverse (1720011021121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211201100271 - 2⁷ = 1211201100143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211201100211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605600550135 + 605600550136.

It is an arithmetic number, because the mean of its divisors is an integer number (605600550136).

Almost surely, 2^{1211201100271} is an apocalyptic number.

1211201100271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211201100271 is an equidigital number, since it uses as much as digits as its factorization.

1211201100271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 1211201100271 its reverse (1720011021121), we get a palindrome (2931212121392).

The spelling of 1211201100271 in words is "one trillion, two hundred eleven billion, two hundred one million, one hundred thousand, two hundred seventy-one".