12412981 has 4 divisors (see below), whose sum is σ = 14186272. Its totient is φ = 10639692.

The previous prime is 12412949. The next prime is 12412987. The reversal of 12412981 is 18921421.

12412981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18921421 = 463 ⋅40867.

It is not a de Polignac number, because 12412981 - 2⁵ = 12412949 is a prime.

It is a super-2 number, since 2×12412981² = 308164194612722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12412987) 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 in 3 ways as a sum of consecutive naturals, for example, 886635 + ... + 886648.

It is an arithmetic number, because the mean of its divisors is an integer number (3546568).

Almost surely, 2^12412981 is an apocalyptic number.

It is an amenable number.

12412981 is a deficient number, since it is larger than the sum of its proper divisors (1773291).

12412981 is an equidigital number, since it uses as much as digits as its factorization.

12412981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773290.

The product of its digits is 1152, while the sum is 28.

The square root of 12412981 is about 3523.2060683417. The cubic root of 12412981 is about 231.5396452432.

The spelling of 12412981 in words is "twelve million, four hundred twelve thousand, nine hundred eighty-one".