2121035003999 has 2 divisors, whose sum is σ = 2121035004000. Its totient is φ = 2121035003998.

The previous prime is 2121035003977. The next prime is 2121035004041. The reversal of 2121035003999 is 9993005301212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121035003999 - 2⁸ = 2121035003743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121035003099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060517501999 + 1060517502000.

It is an arithmetic number, because the mean of its divisors is an integer number (1060517502000).

Almost surely, 2^{2121035003999} is an apocalyptic number.

2121035003999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121035003999 is an equidigital number, since it uses as much as digits as its factorization.

2121035003999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 44.

The spelling of 2121035003999 in words is "two trillion, one hundred twenty-one billion, thirty-five million, three thousand, nine hundred ninety-nine".