4021321340999 has 2 divisors, whose sum is σ = 4021321341000. Its totient is φ = 4021321340998.

The previous prime is 4021321340879. The next prime is 4021321341067. The reversal of 4021321340999 is 9990431231204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021321340999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021321349999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010660670499 + 2010660670500.

It is an arithmetic number, because the mean of its divisors is an integer number (2010660670500).

Almost surely, 2^{4021321340999} is an apocalyptic number.

4021321340999 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021321340999 is an equidigital number, since it uses as much as digits as its factorization.

4021321340999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 4021321340999 in words is "four trillion, twenty-one billion, three hundred twenty-one million, three hundred forty thousand, nine hundred ninety-nine".