1002001221919 has 2 divisors, whose sum is σ = 1002001221920. Its totient is φ = 1002001221918.

The previous prime is 1002001221911. The next prime is 1002001222007. The reversal of 1002001221919 is 9191221002001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002001221919 - 2³ = 1002001221911 is a prime.

It is a super-2 number, since 2×1002001221919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002001221911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501000610959 + 501000610960.

It is an arithmetic number, because the mean of its divisors is an integer number (501000610960).

Almost surely, 2^{1002001221919} is an apocalyptic number.

1002001221919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002001221919 is an equidigital number, since it uses as much as digits as its factorization.

1002001221919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 1002001221919 in words is "one trillion, two billion, one million, two hundred twenty-one thousand, nine hundred nineteen".