12161167228 has 48 divisors (see below), whose sum is σ = 24665457600. Its totient is φ = 5138919936.

The previous prime is 12161167201. The next prime is 12161167229. The reversal of 12161167228 is 82276116121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161167229) 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, 560926 + ... + 582202.

It is an arithmetic number, because the mean of its divisors is an integer number (513863700).

Almost surely, 2^12161167228 is an apocalyptic number.

It is an amenable number.

12161167228 is an abundant number, since it is smaller than the sum of its proper divisors (12504290372).

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

12161167228 is a wasteful number, since it uses less digits than its factorization.

12161167228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21574 (or 21572 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The spelling of 12161167228 in words is "twelve billion, one hundred sixty-one million, one hundred sixty-seven thousand, two hundred twenty-eight".