2111220211271 has 2 divisors, whose sum is σ = 2111220211272. Its totient is φ = 2111220211270.

The previous prime is 2111220211201. The next prime is 2111220211291. The reversal of 2111220211271 is 1721120221112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111220211271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111220211201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055610105635 + 1055610105636.

It is an arithmetic number, because the mean of its divisors is an integer number (1055610105636).

Almost surely, 2^{2111220211271} is an apocalyptic number.

2111220211271 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111220211271 is an equidigital number, since it uses as much as digits as its factorization.

2111220211271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 2111220211271 its reverse (1721120221112), we get a palindrome (3832340432383).

The spelling of 2111220211271 in words is "two trillion, one hundred eleven billion, two hundred twenty million, two hundred eleven thousand, two hundred seventy-one".