111201011011 has 4 divisors (see below), whose sum is σ = 112540782312. Its totient is φ = 109861239712.

The previous prime is 111201011003. The next prime is 111201011023. The reversal of 111201011011 is 110110102111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110110102111 = 4703 ⋅23412737.

It is a cyclic number.

It is not a de Polignac number, because 111201011011 - 2³ = 111201011003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201012011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669885526 + ... + 669885691.

It is an arithmetic number, because the mean of its divisors is an integer number (28135195578).

Almost surely, 2^111201011011 is an apocalyptic number.

111201011011 is a deficient number, since it is larger than the sum of its proper divisors (1339771301).

111201011011 is an equidigital number, since it uses as much as digits as its factorization.

111201011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339771300.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 111201011011 its reverse (110110102111), we get a palindrome (221311113122).

The spelling of 111201011011 in words is "one hundred eleven billion, two hundred one million, eleven thousand, eleven".