20101110199 has 24 divisors (see below), whose sum is σ = 23001507360. Its totient is φ = 17471849472.

The previous prime is 20101110191. The next prime is 20101110209. The reversal of 20101110199 is 99101110102.

It is not a de Polignac number, because 20101110199 - 2³ = 20101110191 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 (20101110191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298267 + ... + 359395.

It is an arithmetic number, because the mean of its divisors is an integer number (958396140).

Almost surely, 2^20101110199 is an apocalyptic number.

20101110199 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20101110199 is a deficient number, since it is larger than the sum of its proper divisors (2900397161).

20101110199 is a wasteful number, since it uses less digits than its factorization.

20101110199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61227 (or 61198 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 25.

The spelling of 20101110199 in words is "twenty billion, one hundred one million, one hundred ten thousand, one hundred ninety-nine".