12221964660 has 48 divisors (see below), whose sum is σ = 34226442432. Its totient is φ = 3258720000.

The previous prime is 12221964631. The next prime is 12221964701. The reversal of 12221964660 is 6646912221.

It is a happy number.

12221964660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) 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 15 ways as a sum of consecutive naturals, for example, 660535 + ... + 678785.

It is an arithmetic number, because the mean of its divisors is an integer number (713050884).

Almost surely, 2^12221964660 is an apocalyptic number.

12221964660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221964660 is an abundant number, since it is smaller than the sum of its proper divisors (22004477772).

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

12221964660 is a wasteful number, since it uses less digits than its factorization.

12221964660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29424 (or 29422 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 12221964660 in words is "twelve billion, two hundred twenty-one million, nine hundred sixty-four thousand, six hundred sixty".