12217960451256 has 64 divisors (see below), whose sum is σ = 34914649486080. Its totient is φ = 3490226737920.

The previous prime is 12217960451243. The next prime is 12217960451287. The reversal of 12217960451256 is 65215406971221.

12217960451256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12217960451199 and 12217960451208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5498506 + ... + 7393881.

It is an arithmetic number, because the mean of its divisors is an integer number (545541398220).

Almost surely, 2^{12217960451256} is an apocalyptic number.

It is an amenable number.

12217960451256 is an abundant number, since it is smaller than the sum of its proper divisors (22696689034824).

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

12217960451256 is a wasteful number, since it uses less digits than its factorization.

12217960451256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12898044 (or 12898040 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 12217960451256 in words is "twelve trillion, two hundred seventeen billion, nine hundred sixty million, four hundred fifty-one thousand, two hundred fifty-six".