12221841 has 8 divisors (see below), whose sum is σ = 16312384. Its totient is φ = 8139600.

The previous prime is 12221837. The next prime is 12221849. The reversal of 12221841 is 14812221.

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

It is not a de Polignac number, because 12221841 - 2² = 12221837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221849) 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, 3516 + ... + 6066.

It is an arithmetic number, because the mean of its divisors is an integer number (2039048).

Almost surely, 2^12221841 is an apocalyptic number.

It is an amenable number.

12221841 is a deficient number, since it is larger than the sum of its proper divisors (4090543).

12221841 is a wasteful number, since it uses less digits than its factorization.

12221841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151.

The product of its digits is 256, while the sum is 21.

The square root of 12221841 is about 3495.9749713063. The cubic root of 12221841 is about 230.3450460601.

The spelling of 12221841 in words is "twelve million, two hundred twenty-one thousand, eight hundred forty-one".