20011002201999 has 96 divisors (see below), whose sum is σ = 30311852223744. Its totient is φ = 12709139189760.

The previous prime is 20011002201991. The next prime is 20011002202007. The reversal of 20011002201999 is 99910220011002.

It is an interprime number because it is at equal distance from previous prime (20011002201991) and next prime (20011002202007).

It is not a de Polignac number, because 20011002201999 - 2³ = 20011002201991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011002201991) 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 in 95 ways as a sum of consecutive naturals, for example, 5369196474 + ... + 5369200200.

It is an arithmetic number, because the mean of its divisors is an integer number (315748460664).

Almost surely, 2^{20011002201999} is an apocalyptic number.

20011002201999 is a deficient number, since it is larger than the sum of its proper divisors (10300850021745).

20011002201999 is a wasteful number, since it uses less digits than its factorization.

20011002201999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057 (or 5054 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The spelling of 20011002201999 in words is "twenty trillion, eleven billion, two million, two hundred one thousand, nine hundred ninety-nine".