12087806212161 has 24 divisors (see below), whose sum is σ = 17578225454400. Its totient is φ = 8004053225376.

The previous prime is 12087806212099. The next prime is 12087806212171. The reversal of 12087806212161 is 16121260878021.

12087806212161 is a `hidden beast` number, since 1 + 2 + 0 + 8 + 7 + 8 + 0 + 621 + 2 + 16 + 1 = 666.

12087806212161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12087806212161 - 2¹³ = 12087806203969 is a prime.

It is a super-2 number, since 2×12087806212161² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12087806212171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27923410 + ... + 28352996.

It is an arithmetic number, because the mean of its divisors is an integer number (732426060600).

Almost surely, 2^{12087806212161} is an apocalyptic number.

It is an amenable number.

12087806212161 is a deficient number, since it is larger than the sum of its proper divisors (5490419242239).

12087806212161 is a wasteful number, since it uses less digits than its factorization.

12087806212161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450725 (or 450722 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 12087806212161 in words is "twelve trillion, eighty-seven billion, eight hundred six million, two hundred twelve thousand, one hundred sixty-one".