2001111199 has 4 divisors (see below), whose sum is σ = 2002936464. Its totient is φ = 1999285936.

The previous prime is 2001111139. The next prime is 2001111209. The reversal of 2001111199 is 9911111002.

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 2001111199 - 2⁹ = 2001110687 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 (2001111139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910987 + ... + 913180.

It is an arithmetic number, because the mean of its divisors is an integer number (500734116).

Almost surely, 2^2001111199 is an apocalyptic number.

2001111199 is a deficient number, since it is larger than the sum of its proper divisors (1825265).

2001111199 is a wasteful number, since it uses less digits than its factorization.

2001111199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825264.

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

The square root of 2001111199 is about 44733.7814073436. The cubic root of 2001111199 is about 1260.1543438627.

The spelling of 2001111199 in words is "two billion, one million, one hundred eleven thousand, one hundred ninety-nine".