1211022201271 has 2 divisors, whose sum is σ = 1211022201272. Its totient is φ = 1211022201270.

The previous prime is 1211022201199. The next prime is 1211022201289. The reversal of 1211022201271 is 1721022201121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211022201271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211022201371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605511100635 + 605511100636.

It is an arithmetic number, because the mean of its divisors is an integer number (605511100636).

Almost surely, 2^{1211022201271} is an apocalyptic number.

1211022201271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211022201271 is an equidigital number, since it uses as much as digits as its factorization.

1211022201271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 1211022201271 its reverse (1721022201121), we get a palindrome (2932044402392).

The spelling of 1211022201271 in words is "one trillion, two hundred eleven billion, twenty-two million, two hundred one thousand, two hundred seventy-one".