1002011121999 has 40 divisors (see below), whose sum is σ = 1517647742688. Its totient is φ = 658766545920.

The previous prime is 1002011121997. The next prime is 1002011122003. The reversal of 1002011121999 is 9991211102001.

It is not a de Polignac number, because 1002011121999 - 2¹ = 1002011121997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002011121997) 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 in 39 ways as a sum of consecutive naturals, for example, 1980894 + ... + 2434740.

Almost surely, 2^{1002011121999} is an apocalyptic number.

1002011121999 is a deficient number, since it is larger than the sum of its proper divisors (515636620689).

1002011121999 is an equidigital number, since it uses as much as digits as its factorization.

1002011121999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454237 (or 454228 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 1002011121999 in words is "one trillion, two billion, eleven million, one hundred twenty-one thousand, nine hundred ninety-nine".