12161136 has 40 divisors (see below), whose sum is σ = 33834640. Its totient is φ = 3741696.

The previous prime is 12161119. The next prime is 12161141. The reversal of 12161136 is 63116121.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9121 + ... + 10368.

It is an arithmetic number, because the mean of its divisors is an integer number (845866).

Almost surely, 2^12161136 is an apocalyptic number.

12161136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12161136 is an abundant number, since it is smaller than the sum of its proper divisors (21673504).

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

12161136 is a wasteful number, since it uses less digits than its factorization.

12161136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19513 (or 19507 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 12161136 is about 3487.2820361995. The cubic root of 12161136 is about 229.9630438417.

Adding to 12161136 its reverse (63116121), we get a palindrome (75277257).

The spelling of 12161136 in words is "twelve million, one hundred sixty-one thousand, one hundred thirty-six".