12224381 has 8 divisors (see below), whose sum is σ = 13332480. Its totient is φ = 11140272.

The previous prime is 12224357. The next prime is 12224383. The reversal of 12224381 is 18342221.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-12224381 is a prime.

It is a super-2 number, since 2×12224381² = 298870981666322, 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 (12224383) 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, 4925 + ... + 6978.

It is an arithmetic number, because the mean of its divisors is an integer number (1666560).

Almost surely, 2^12224381 is an apocalyptic number.

It is an amenable number.

12224381 is a deficient number, since it is larger than the sum of its proper divisors (1108099).

12224381 is a wasteful number, since it uses less digits than its factorization.

12224381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11995.

The product of its digits is 768, while the sum is 23.

The square root of 12224381 is about 3496.3382273459. The cubic root of 12224381 is about 230.3610020821.

The spelling of 12224381 in words is "twelve million, two hundred twenty-four thousand, three hundred eighty-one".