12621222548496 has 135 divisors (see below), whose sum is σ = 36095143602271. Its totient is φ = 4116908281152.

The previous prime is 12621222548491. The next prime is 12621222548507. The reversal of 12621222548496 is 69484522212621.

The square root of 12621222548496 is 3552636.

It is a perfect power (a square), and thus also a powerful number.

12621222548496 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 1 + 2 + 2 + 2 + 548 + 4 + 96 = 666.

12621222548496 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12621222548491) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2003683555 + ... + 2003689853.

Almost surely, 2^{12621222548496} is an apocalyptic number.

12621222548496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12621222548496 is the 3552636-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12621222548496

12621222548496 is an abundant number, since it is smaller than the sum of its proper divisors (23473921053775).

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

12621222548496 is an frugal number, since it uses more digits than its factorization.

12621222548496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12706 (or 6351 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The spelling of 12621222548496 in words is "twelve trillion, six hundred twenty-one billion, two hundred twenty-two million, five hundred forty-eight thousand, four hundred ninety-six".