12221894 has 8 divisors (see below), whose sum is σ = 18370800. Its totient is φ = 6098296.

The previous prime is 12221893. The next prime is 12221917. The reversal of 12221894 is 49812221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5069 + ... + 7080.

It is an arithmetic number, because the mean of its divisors is an integer number (2296350).

Almost surely, 2^12221894 is an apocalyptic number.

12221894 is a deficient number, since it is larger than the sum of its proper divisors (6148906).

12221894 is a wasteful number, since it uses less digits than its factorization.

12221894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12654.

The product of its digits is 2304, while the sum is 29.

The square root of 12221894 is about 3495.9825514439. The cubic root of 12221894 is about 230.3453790233.

The spelling of 12221894 in words is "twelve million, two hundred twenty-one thousand, eight hundred ninety-four".