12221846992 has 30 divisors (see below), whose sum is σ = 25154706278. Its totient is φ = 5751455232.

The previous prime is 12221846981. The next prime is 12221847013. The reversal of 12221846992 is 29964812221.

12221846992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 7613609536 + 4608237456 = 87256^2 + 67884^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

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 5 ways as a sum of consecutive naturals, for example, 1316943 + ... + 1326190.

Almost surely, 2^12221846992 is an apocalyptic number.

It is an amenable number.

12221846992 is an abundant number, since it is smaller than the sum of its proper divisors (12932859286).

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

12221846992 is a wasteful number, since it uses less digits than its factorization.

12221846992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643175 (or 2643152 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The spelling of 12221846992 in words is "twelve billion, two hundred twenty-one million, eight hundred forty-six thousand, nine hundred ninety-two".