12161882 has 4 divisors (see below), whose sum is σ = 18242826. Its totient is φ = 6080940.

The previous prime is 12161879. The next prime is 12161887. The reversal of 12161882 is 28816121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28816121 = 263 ⋅109567.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 44521 = 3481^2 + 211^2 .

It is a super-2 number, since 2×12161882² = 295822747563848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12161887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3040469 + ... + 3040472.

Almost surely, 2^12161882 is an apocalyptic number.

12161882 is a deficient number, since it is larger than the sum of its proper divisors (6080944).

12161882 is an equidigital number, since it uses as much as digits as its factorization.

12161882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6080943.

The product of its digits is 1536, while the sum is 29.

The square root of 12161882 is about 3487.3889946491. The cubic root of 12161882 is about 229.9677459497.

The spelling of 12161882 in words is "twelve million, one hundred sixty-one thousand, eight hundred eighty-two".