12821194 has 8 divisors (see below), whose sum is σ = 19248768. Its totient is φ = 6404940.

The previous prime is 12821153. The next prime is 12821227. The reversal of 12821194 is 49112821.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089 + ... + 5179.

It is an arithmetic number, because the mean of its divisors is an integer number (2406096).

Almost surely, 2^12821194 is an apocalyptic number.

12821194 is a deficient number, since it is larger than the sum of its proper divisors (6427574).

12821194 is a wasteful number, since it uses less digits than its factorization.

12821194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660.

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

The square root of 12821194 is about 3580.6694904724. The cubic root of 12821194 is about 234.0504554311.

The spelling of 12821194 in words is "twelve million, eight hundred twenty-one thousand, one hundred ninety-four".