121286807271 has 80 divisors (see below), whose sum is σ = 214775193600. Its totient is φ = 66738676032.

The previous prime is 121286807267. The next prime is 121286807293. The reversal of 121286807271 is 172708682121.

121286807271 is a `hidden beast` number, since 1 + 21 + 286 + 80 + 7 + 271 = 666.

It is not a de Polignac number, because 121286807271 - 2² = 121286807267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121286807771) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6288040 + ... + 6307298.

It is an arithmetic number, because the mean of its divisors is an integer number (2684689920).

Almost surely, 2^121286807271 is an apocalyptic number.

121286807271 is a deficient number, since it is larger than the sum of its proper divisors (93488386329).

121286807271 is a wasteful number, since it uses less digits than its factorization.

121286807271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19690 (or 19681 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The spelling of 121286807271 in words is "one hundred twenty-one billion, two hundred eighty-six million, eight hundred seven thousand, two hundred seventy-one".