12169181121 has 16 divisors (see below), whose sum is σ = 16336951488. Its totient is φ = 8057246400.

The previous prime is 12169181071. The next prime is 12169181131. The reversal of 12169181121 is 12118196121.

It is not a de Polignac number, because 12169181121 - 2¹¹ = 12169179073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12169181131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319431 + ... + 355491.

It is an arithmetic number, because the mean of its divisors is an integer number (1021059468).

Almost surely, 2^12169181121 is an apocalyptic number.

It is an amenable number.

12169181121 is a deficient number, since it is larger than the sum of its proper divisors (4167770367).

12169181121 is a wasteful number, since it uses less digits than its factorization.

12169181121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36832.

The product of its digits is 1728, while the sum is 33.

The spelling of 12169181121 in words is "twelve billion, one hundred sixty-nine million, one hundred eighty-one thousand, one hundred twenty-one".