12241681 has 16 divisors (see below), whose sum is σ = 13622400. Its totient is φ = 10948608.

The previous prime is 12241679. The next prime is 12241699. The reversal of 12241681 is 18614221.

12241681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a 5-Lehmer number, since φ(12241681) divides (12241681-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 12241681 - 2¹ = 12241679 is a prime.

It is a super-2 number, since 2×12241681² = 299717507411522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12241651) 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, 47505 + ... + 47761.

It is an arithmetic number, because the mean of its divisors is an integer number (851400).

Almost surely, 2^12241681 is an apocalyptic number.

It is an amenable number.

12241681 is a deficient number, since it is larger than the sum of its proper divisors (1380719).

12241681 is a wasteful number, since it uses less digits than its factorization.

12241681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408.

The product of its digits is 768, while the sum is 25.

The square root of 12241681 is about 3498.8113695940. The cubic root of 12241681 is about 230.4696201744.

The spelling of 12241681 in words is "twelve million, two hundred forty-one thousand, six hundred eighty-one".