199210109011 has 4 divisors (see below), whose sum is σ = 201037724800. Its totient is φ = 197382493224.

The previous prime is 199210109009. The next prime is 199210109029. The reversal of 199210109011 is 110901012991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110901012991 = 288241 ⋅384751.

It is a cyclic number.

It is not a de Polignac number, because 199210109011 - 2¹ = 199210109009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199210109051) 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, 913807731 + ... + 913807948.

It is an arithmetic number, because the mean of its divisors is an integer number (50259431200).

Almost surely, 2^199210109011 is an apocalyptic number.

199210109011 is a deficient number, since it is larger than the sum of its proper divisors (1827615789).

199210109011 is a wasteful number, since it uses less digits than its factorization.

199210109011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827615788.

The product of its (nonzero) digits is 1458, while the sum is 34.

The spelling of 199210109011 in words is "one hundred ninety-nine billion, two hundred ten million, one hundred nine thousand, eleven".