20001012199 has 8 divisors (see below), whose sum is σ = 22867698848. Its totient is φ = 17136675360.

The previous prime is 20001012191. The next prime is 20001012203. The reversal of 20001012199 is 99121010002.

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

It is not a de Polignac number, because 20001012199 - 2³ = 20001012191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001012191) 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, 569172 + ... + 603289.

It is an arithmetic number, because the mean of its divisors is an integer number (2858462356).

Almost surely, 2^20001012199 is an apocalyptic number.

20001012199 is a deficient number, since it is larger than the sum of its proper divisors (2866686649).

20001012199 is a wasteful number, since it uses less digits than its factorization.

20001012199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174905.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 20001012199 in words is "twenty billion, one million, twelve thousand, one hundred ninety-nine".