12221777244 has 48 divisors (see below), whose sum is σ = 29009705760. Its totient is φ = 4003722240.

The previous prime is 12221777233. The next prime is 12221777287. The reversal of 12221777244 is 44277712221.

12221777244 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 15 ways as a sum of consecutive naturals, for example, 937072 + ... + 950024.

It is an arithmetic number, because the mean of its divisors is an integer number (604368870).

Almost surely, 2^12221777244 is an apocalyptic number.

It is an amenable number.

12221777244 is an abundant number, since it is smaller than the sum of its proper divisors (16787928516).

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

12221777244 is a wasteful number, since it uses less digits than its factorization.

12221777244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14310 (or 14308 counting only the distinct ones).

The product of its digits is 87808, while the sum is 39.

The spelling of 12221777244 in words is "twelve billion, two hundred twenty-one million, seven hundred seventy-seven thousand, two hundred forty-four".