111111201201 has 96 divisors (see below), whose sum is σ = 200374705152. Its totient is φ = 53181722880.

The previous prime is 111111201167. The next prime is 111111201209. The reversal of 111111201201 is 102102111111.

It is not a de Polignac number, because 111111201201 - 2¹⁰ = 111111200177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111111201209) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23928586 + ... + 23933228.

It is an arithmetic number, because the mean of its divisors is an integer number (2087236512).

Almost surely, 2^111111201201 is an apocalyptic number.

111111201201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111111201201 is a deficient number, since it is larger than the sum of its proper divisors (89263503951).

111111201201 is a wasteful number, since it uses less digits than its factorization.

111111201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303 (or 5290 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111111201201 its reverse (102102111111), we get a palindrome (213213312312).

The spelling of 111111201201 in words is "one hundred eleven billion, one hundred eleven million, two hundred one thousand, two hundred one".