12161412 has 18 divisors (see below), whose sum is σ = 30741438. Its totient is φ = 4053792.

The previous prime is 12161351. The next prime is 12161417. The reversal of 12161412 is 21416121.

It can be written as a sum of positive squares in only one way, i.e., 12152196 + 9216 = 3486^2 + 96^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12161417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168873 + ... + 168944.

Almost surely, 2^12161412 is an apocalyptic number.

12161412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12161412 is an abundant number, since it is smaller than the sum of its proper divisors (18580026).

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

12161412 is a wasteful number, since it uses less digits than its factorization.

12161412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337827 (or 337822 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 12161412 is about 3487.3216083407. The cubic root of 12161412 is about 229.9647835180.

Adding to 12161412 its reverse (21416121), we get a palindrome (33577533).

It can be divided in two parts, 1216 and 1412, that added together give a triangular number (2628 = T₇₂).

The spelling of 12161412 in words is "twelve million, one hundred sixty-one thousand, four hundred twelve".