12656222066261 has 8 divisors (see below), whose sum is σ = 12950666962464. Its totient is φ = 12361782358800.

The previous prime is 12656222066251. The next prime is 12656222066281. The reversal of 12656222066261 is 16266022265621.

12656222066261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12656222066261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12656222066251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3875030 + ... + 6350456.

It is an arithmetic number, because the mean of its divisors is an integer number (1618833370308).

Almost surely, 2^{12656222066261} is an apocalyptic number.

It is an amenable number.

12656222066261 is a deficient number, since it is larger than the sum of its proper divisors (294444896203).

12656222066261 is a wasteful number, since it uses less digits than its factorization.

12656222066261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594371.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 12656222066261 in words is "twelve trillion, six hundred fifty-six billion, two hundred twenty-two million, sixty-six thousand, two hundred sixty-one".