122127277887 has 12 divisors (see below), whose sum is σ = 180159389280. Its totient is φ = 79685883168.

The previous prime is 122127277861. The next prime is 122127277889. The reversal of 122127277887 is 788772721221.

122127277887 is a `hidden beast` number, since 1 + 221 + 272 + 7 + 78 + 87 = 666.

It is not a de Polignac number, because 122127277887 - 2¹¹ = 122127275839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122127277889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144358062 + ... + 144358907.

It is an arithmetic number, because the mean of its divisors is an integer number (15013282440).

Almost surely, 2^122127277887 is an apocalyptic number.

122127277887 is a deficient number, since it is larger than the sum of its proper divisors (58032111393).

122127277887 is a wasteful number, since it uses less digits than its factorization.

122127277887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288717022 (or 288717019 counting only the distinct ones).

The product of its digits is 2458624, while the sum is 54.

The spelling of 122127277887 in words is "one hundred twenty-two billion, one hundred twenty-seven million, two hundred seventy-seven thousand, eight hundred eighty-seven".