2171392659127 has 2 divisors, whose sum is σ = 2171392659128. Its totient is φ = 2171392659126.

The previous prime is 2171392659053. The next prime is 2171392659179. The reversal of 2171392659127 is 7219562931712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2171392659127 - 2²³ = 2171384270519 is a prime.

It is a super-2 number, since 2×2171392659127² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171392659197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085696329563 + 1085696329564.

It is an arithmetic number, because the mean of its divisors is an integer number (1085696329564).

Almost surely, 2^{2171392659127} is an apocalyptic number.

2171392659127 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171392659127 is an equidigital number, since it uses as much as digits as its factorization.

2171392659127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 55.

The spelling of 2171392659127 in words is "two trillion, one hundred seventy-one billion, three hundred ninety-two million, six hundred fifty-nine thousand, one hundred twenty-seven".