20001111121199 has 8 divisors (see below), whose sum is σ = 21608917485792. Its totient is φ = 18403198950240.

The previous prime is 20001111121183. The next prime is 20001111121259. The reversal of 20001111121199 is 99112111110002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20001111121199 - 2⁴ = 20001111121183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001114121199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2473544204 + ... + 2473552289.

It is an arithmetic number, because the mean of its divisors is an integer number (2701114685724).

Almost surely, 2^{20001111121199} is an apocalyptic number.

20001111121199 is a deficient number, since it is larger than the sum of its proper divisors (1607806364593).

20001111121199 is a wasteful number, since it uses less digits than its factorization.

20001111121199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947096817.

The product of its (nonzero) digits is 324, while the sum is 29.

The spelling of 20001111121199 in words is "twenty trillion, one billion, one hundred eleven million, one hundred twenty-one thousand, one hundred ninety-nine".