20001011199999 has 4 divisors (see below), whose sum is σ = 26668014933336. Its totient is φ = 13334007466664.

The previous prime is 20001011199973. The next prime is 20001011200043. The reversal of 20001011199999 is 99999111010002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20001011199999 - 2¹³ = 20001011191807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001011129999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3333501866664 + ... + 3333501866669.

It is an arithmetic number, because the mean of its divisors is an integer number (6667003733334).

Almost surely, 2^{20001011199999} is an apocalyptic number.

20001011199999 is a deficient number, since it is larger than the sum of its proper divisors (6667003733337).

20001011199999 is an equidigital number, since it uses as much as digits as its factorization.

20001011199999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667003733336.

The product of its (nonzero) digits is 118098, while the sum is 51.

The spelling of 20001011199999 in words is "twenty trillion, one billion, eleven million, one hundred ninety-nine thousand, nine hundred ninety-nine".