12235981 has 8 divisors (see below), whose sum is σ = 12941280. Its totient is φ = 11536848.

The previous prime is 12235967. The next prime is 12235997. The reversal of 12235981 is 18953221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12235981 - 2⁹ = 12235469 is a prime.

It is a super-2 number, since 2×12235981² = 299438462064722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12235901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2895 + ... + 5731.

It is an arithmetic number, because the mean of its divisors is an integer number (1617660).

Almost surely, 2^12235981 is an apocalyptic number.

It is an amenable number.

12235981 is a deficient number, since it is larger than the sum of its proper divisors (705299).

12235981 is a wasteful number, since it uses less digits than its factorization.

12235981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083.

The product of its digits is 4320, while the sum is 31.

The square root of 12235981 is about 3497.9967124055. The cubic root of 12235981 is about 230.4338440208.

The spelling of 12235981 in words is "twelve million, two hundred thirty-five thousand, nine hundred eighty-one".