87123112122 has 32 divisors (see below), whose sum is σ = 179131665600. Its totient is φ = 28228341888.

The previous prime is 87123112093. The next prime is 87123112147. The reversal of 87123112122 is 22121132178.

It is a self number, because there is not a number n which added to its sum of digits gives 87123112122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33654 + ... + 418782.

It is an arithmetic number, because the mean of its divisors is an integer number (5597864550).

Almost surely, 2^87123112122 is an apocalyptic number.

87123112122 is an abundant number, since it is smaller than the sum of its proper divisors (92008553478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87123112122 is a wasteful number, since it uses less digits than its factorization.

87123112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386190.

The product of its digits is 2688, while the sum is 30.

The spelling of 87123112122 in words is "eighty-seven billion, one hundred twenty-three million, one hundred twelve thousand, one hundred twenty-two".