2121312999599 has 2 divisors, whose sum is σ = 2121312999600. Its totient is φ = 2121312999598.

The previous prime is 2121312999587. The next prime is 2121312999607. The reversal of 2121312999599 is 9959992131212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121312999599 - 2¹⁶ = 2121312934063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121312999529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060656499799 + 1060656499800.

It is an arithmetic number, because the mean of its divisors is an integer number (1060656499800).

Almost surely, 2^{2121312999599} is an apocalyptic number.

2121312999599 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121312999599 is an equidigital number, since it uses as much as digits as its factorization.

2121312999599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7085880, while the sum is 62.

The spelling of 2121312999599 in words is "two trillion, one hundred twenty-one billion, three hundred twelve million, nine hundred ninety-nine thousand, five hundred ninety-nine".