111011211211201 has 16 divisors (see below), whose sum is σ = 132410020393728. Its totient is φ = 90998916940800.

The previous prime is 111011211211139. The next prime is 111011211211213. The reversal of 111011211211201 is 102112112110111.

It is not a de Polignac number, because 111011211211201 - 2¹¹ = 111011211209153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111011211211231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61555480 + ... + 63333241.

It is an arithmetic number, because the mean of its divisors is an integer number (8275626274608).

Almost surely, 2^{111011211211201} is an apocalyptic number.

It is an amenable number.

111011211211201 is a deficient number, since it is larger than the sum of its proper divisors (21398809182527).

111011211211201 is a wasteful number, since it uses less digits than its factorization.

111011211211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124894272.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 111011211211201 its reverse (102112112110111), we get a palindrome (213123323321312).

The spelling of 111011211211201 in words is "one hundred eleven trillion, eleven billion, two hundred eleven million, two hundred eleven thousand, two hundred one".