12216721802 has 8 divisors (see below), whose sum is σ = 19289560800. Its totient is φ = 5786868204.

The previous prime is 12216721799. The next prime is 12216721807. The reversal of 12216721802 is 20812761221.

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

It is not an unprimeable number, because it can be changed into a prime (12216721807) 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, 160746302 + ... + 160746377.

It is an arithmetic number, because the mean of its divisors is an integer number (2411195100).

Almost surely, 2^12216721802 is an apocalyptic number.

12216721802 is a deficient number, since it is larger than the sum of its proper divisors (7072838998).

12216721802 is a wasteful number, since it uses less digits than its factorization.

12216721802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321492700.

The product of its (nonzero) digits is 5376, while the sum is 32.

The spelling of 12216721802 in words is "twelve billion, two hundred sixteen million, seven hundred twenty-one thousand, eight hundred two".