12216802 has 8 divisors (see below), whose sum is σ = 19734876. Its totient is φ = 5638512.

The previous prime is 12216781. The next prime is 12216803. The reversal of 12216802 is 20861221.

It can be written as a sum of positive squares in 2 ways, for example, as 12173121 + 43681 = 3489^2 + 209^2 .

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

It is a super-2 number, since 2×12216802² = 298500502214408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12216803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234913 + ... + 234964.

Almost surely, 2^12216802 is an apocalyptic number.

12216802 is a deficient number, since it is larger than the sum of its proper divisors (7518074).

12216802 is a wasteful number, since it uses less digits than its factorization.

12216802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469892.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12216802 is about 3495.2542110696. The cubic root of 12216802 is about 230.3133850296.

The spelling of 12216802 in words is "twelve million, two hundred sixteen thousand, eight hundred two".