12117461 has 2 divisors, whose sum is σ = 12117462. Its totient is φ = 12117460.

The previous prime is 12117437. The next prime is 12117473. The reversal of 12117461 is 16471121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 100 = 3481^2 + 10^2 .

It is an emirp because it is prime and its reverse (16471121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12117461 - 2⁶ = 12117397 is a prime.

It is a super-2 number, since 2×12117461² = 293665722173042, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12117491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6058730 + 6058731.

It is an arithmetic number, because the mean of its divisors is an integer number (6058731).

Almost surely, 2^12117461 is an apocalyptic number.

It is an amenable number.

12117461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12117461 is an equidigital number, since it uses as much as digits as its factorization.

12117461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 23.

The square root of 12117461 is about 3481.0143636590. The cubic root of 12117461 is about 229.6874203742.

Adding to 12117461 its reverse (16471121), we get a palindrome (28588582).

The spelling of 12117461 in words is "twelve million, one hundred seventeen thousand, four hundred sixty-one".