2175061221271 has 2 divisors, whose sum is σ = 2175061221272. Its totient is φ = 2175061221270.

The previous prime is 2175061221217. The next prime is 2175061221287. The reversal of 2175061221271 is 1721221605712.

Together with previous prime (2175061221217) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2175061221271 - 2¹⁷ = 2175061090199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2175061221271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2175061227271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1087530610635 + 1087530610636.

It is an arithmetic number, because the mean of its divisors is an integer number (1087530610636).

Almost surely, 2^{2175061221271} is an apocalyptic number.

2175061221271 is a deficient number, since it is larger than the sum of its proper divisors (1).

2175061221271 is an equidigital number, since it uses as much as digits as its factorization.

2175061221271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 37.

Adding to 2175061221271 its reverse (1721221605712), we get a palindrome (3896282826983).

The spelling of 2175061221271 in words is "two trillion, one hundred seventy-five billion, sixty-one million, two hundred twenty-one thousand, two hundred seventy-one".