12221322984 has 128 divisors (see below), whose sum is σ = 38710224000. Its totient is φ = 3539192832.

The previous prime is 12221322979. The next prime is 12221322991. The reversal of 12221322984 is 48922312221.

It is a happy number.

12221322984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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 31 ways as a sum of consecutive naturals, for example, 80274 + ... + 175745.

It is an arithmetic number, because the mean of its divisors is an integer number (302423625).

Almost surely, 2^12221322984 is an apocalyptic number.

It is an amenable number.

12221322984 is an abundant number, since it is smaller than the sum of its proper divisors (26488901016).

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

12221322984 is a wasteful number, since it uses less digits than its factorization.

12221322984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256064 (or 256054 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The spelling of 12221322984 in words is "twelve billion, two hundred twenty-one million, three hundred twenty-two thousand, nine hundred eighty-four".