101200111191 has 12 divisors (see below), whose sum is σ = 147244932432. Its totient is φ = 66974282016.

The previous prime is 101200111171. The next prime is 101200111213. The reversal of 101200111191 is 191111002101.

It is a de Polignac number, because none of the positive numbers 2^k-101200111191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101200111171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41036931 + ... + 41039396.

It is an arithmetic number, because the mean of its divisors is an integer number (12270411036).

Almost surely, 2^101200111191 is an apocalyptic number.

101200111191 is a deficient number, since it is larger than the sum of its proper divisors (46044821241).

101200111191 is a wasteful number, since it uses less digits than its factorization.

101200111191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82076470 (or 82076467 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 18.

Adding to 101200111191 its reverse (191111002101), we get a palindrome (292311113292).

The spelling of 101200111191 in words is "one hundred one billion, two hundred million, one hundred eleven thousand, one hundred ninety-one".