12217209902 has 16 divisors (see below), whose sum is σ = 19406008512. Its totient is φ = 5748622080.

The previous prime is 12217209877. The next prime is 12217209911. The reversal of 12217209902 is 20990271221.

12217209902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422603 + ... + 450585.

It is an arithmetic number, because the mean of its divisors is an integer number (1212875532).

Almost surely, 2^12217209902 is an apocalyptic number.

12217209902 is a deficient number, since it is larger than the sum of its proper divisors (7188798610).

12217209902 is a wasteful number, since it uses less digits than its factorization.

12217209902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40843.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 12217209902 in words is "twelve billion, two hundred seventeen million, two hundred nine thousand, nine hundred two".