199217129111 has 16 divisors (see below), whose sum is σ = 267480342528. Its totient is φ = 143293039200.

The previous prime is 199217129063. The next prime is 199217129141. The reversal of 199217129111 is 111921712991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199217129111 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199217129141) 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 15 ways as a sum of consecutive naturals, for example, 99508055 + ... + 99510056.

It is an arithmetic number, because the mean of its divisors is an integer number (16717521408).

Almost surely, 2^199217129111 is an apocalyptic number.

199217129111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

199217129111 is a deficient number, since it is larger than the sum of its proper divisors (68263213417).

199217129111 is a wasteful number, since it uses less digits than its factorization.

199217129111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199018142.

The product of its digits is 20412, while the sum is 44.

The spelling of 199217129111 in words is "one hundred ninety-nine billion, two hundred seventeen million, one hundred twenty-nine thousand, one hundred eleven".