2121310293727 has 2 divisors, whose sum is σ = 2121310293728. Its totient is φ = 2121310293726.

The previous prime is 2121310293721. The next prime is 2121310293779. The reversal of 2121310293727 is 7273920131212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121310293727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121310293727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121310293721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060655146863 + 1060655146864.

It is an arithmetic number, because the mean of its divisors is an integer number (1060655146864).

Almost surely, 2^{2121310293727} is an apocalyptic number.

2121310293727 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121310293727 is an equidigital number, since it uses as much as digits as its factorization.

2121310293727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 2121310293727 in words is "two trillion, one hundred twenty-one billion, three hundred ten million, two hundred ninety-three thousand, seven hundred twenty-seven".