201211201271 has 2 divisors, whose sum is σ = 201211201272. Its totient is φ = 201211201270.

The previous prime is 201211201267. The next prime is 201211201291. The reversal of 201211201271 is 172102112102.

It is a happy number.

It is an a-pointer prime, because the next prime (201211201291) can be obtained adding 201211201271 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201211201271 - 2² = 201211201267 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201211201291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605600635 + 100605600636.

It is an arithmetic number, because the mean of its divisors is an integer number (100605600636).

Almost surely, 2^201211201271 is an apocalyptic number.

201211201271 is a deficient number, since it is larger than the sum of its proper divisors (1).

201211201271 is an equidigital number, since it uses as much as digits as its factorization.

201211201271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 201211201271 its reverse (172102112102), we get a palindrome (373313313373).

The spelling of 201211201271 in words is "two hundred one billion, two hundred eleven million, two hundred one thousand, two hundred seventy-one".