12101961884647 has 2 divisors, whose sum is σ = 12101961884648. Its totient is φ = 12101961884646.

The previous prime is 12101961884627. The next prime is 12101961884693. The reversal of 12101961884647 is 74648816910121.

12101961884647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12101961884647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12101961884591 and 12101961884600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12101961884627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050980942323 + 6050980942324.

It is an arithmetic number, because the mean of its divisors is an integer number (6050980942324).

Almost surely, 2^{12101961884647} is an apocalyptic number.

12101961884647 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101961884647 is an equidigital number, since it uses as much as digits as its factorization.

12101961884647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 58.

The spelling of 12101961884647 in words is "twelve trillion, one hundred one billion, nine hundred sixty-one million, eight hundred eighty-four thousand, six hundred forty-seven".