111201121011 has 16 divisors (see below), whose sum is σ = 152761959584. Its totient is φ = 71899985664.

The previous prime is 111201120967. The next prime is 111201121019. The reversal of 111201121011 is 110121102111.

It is not a de Polignac number, because 111201121011 - 2⁷ = 111201120883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201121019) 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, 1565596 + ... + 1635081.

It is an arithmetic number, because the mean of its divisors is an integer number (9547622474).

Almost surely, 2^111201121011 is an apocalyptic number.

111201121011 is a deficient number, since it is larger than the sum of its proper divisors (41560838573).

111201121011 is a wasteful number, since it uses less digits than its factorization.

111201121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201030.

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

Adding to 111201121011 its reverse (110121102111), we get a palindrome (221322223122).

The spelling of 111201121011 in words is "one hundred eleven billion, two hundred one million, one hundred twenty-one thousand, eleven".