121715271 has 16 divisors (see below), whose sum is σ = 180530400. Its totient is φ = 81048384.

The previous prime is 121715263. The next prime is 121715281. The reversal of 121715271 is 172517121.

It is not a de Polignac number, because 121715271 - 2³ = 121715263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121715261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26755 + ... + 30971.

It is an arithmetic number, because the mean of its divisors is an integer number (11283150).

Almost surely, 2^121715271 is an apocalyptic number.

121715271 is a deficient number, since it is larger than the sum of its proper divisors (58815129).

121715271 is a wasteful number, since it uses less digits than its factorization.

121715271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5295 (or 5289 counting only the distinct ones).

The product of its digits is 980, while the sum is 27.

The square root of 121715271 is about 11032.4644119073. The cubic root of 121715271 is about 495.5814288136.

The spelling of 121715271 in words is "one hundred twenty-one million, seven hundred fifteen thousand, two hundred seventy-one".