199120010111 has 4 divisors (see below), whose sum is σ = 217221829224. Its totient is φ = 181018191000.

The previous prime is 199120010101. The next prime is 199120010129. The reversal of 199120010111 is 111010021991.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199120010111 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 (199120010101) 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, 9050909540 + ... + 9050909561.

It is an arithmetic number, because the mean of its divisors is an integer number (54305457306).

Almost surely, 2^199120010111 is an apocalyptic number.

199120010111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

199120010111 is a deficient number, since it is larger than the sum of its proper divisors (18101819113).

199120010111 is a wasteful number, since it uses less digits than its factorization.

199120010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18101819112.

The product of its (nonzero) digits is 162, while the sum is 26.

The spelling of 199120010111 in words is "one hundred ninety-nine billion, one hundred twenty million, ten thousand, one hundred eleven".