201200011111 has 24 divisors (see below), whose sum is σ = 231900033024. Its totient is φ = 173096090640.

The previous prime is 201200011097. The next prime is 201200011139. The reversal of 201200011111 is 111110002102.

It is not a de Polignac number, because 201200011111 - 2⁵ = 201200011079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201200011511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3733786 + ... + 3787288.

It is an arithmetic number, because the mean of its divisors is an integer number (9662501376).

Almost surely, 2^201200011111 is an apocalyptic number.

201200011111 is a deficient number, since it is larger than the sum of its proper divisors (30700021913).

201200011111 is a wasteful number, since it uses less digits than its factorization.

201200011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54499 (or 54480 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 201200011111 its reverse (111110002102), we get a palindrome (312310013213).

Subtracting from 201200011111 its reverse (111110002102), we obtain a palindrome (90090009009).

The spelling of 201200011111 in words is "two hundred one billion, two hundred million, eleven thousand, one hundred eleven".