12821202 has 12 divisors (see below), whose sum is σ = 27779310. Its totient is φ = 4273728.

The previous prime is 12821153. The next prime is 12821227. The reversal of 12821202 is 20212821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11431161 + 1390041 = 3381^2 + 1179^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 712289 = 12821202 / (1 + 2 + 8 + 2 + 1 + 2 + 0 + 2).

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 5 ways as a sum of consecutive naturals, for example, 356127 + ... + 356162.

Almost surely, 2^12821202 is an apocalyptic number.

12821202 is an abundant number, since it is smaller than the sum of its proper divisors (14958108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12821202 is a wasteful number, since it uses less digits than its factorization.

12821202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712297 (or 712294 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 12821202 is about 3580.6706075818. The cubic root of 12821202 is about 234.0505041110.

The spelling of 12821202 in words is "twelve million, eight hundred twenty-one thousand, two hundred two".