111000561011 has 4 divisors (see below), whose sum is σ = 111002166912. Its totient is φ = 110998955112.

The previous prime is 111000560989. The next prime is 111000561043. The reversal of 111000561011 is 110165000111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111000561011 - 2¹⁰ = 111000559987 is a prime.

It is a super-2 number, since 2×111000561011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111008561011) 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, 694376 + ... + 839141.

It is an arithmetic number, because the mean of its divisors is an integer number (27750541728).

Almost surely, 2^111000561011 is an apocalyptic number.

111000561011 is a deficient number, since it is larger than the sum of its proper divisors (1605901).

111000561011 is an equidigital number, since it uses as much as digits as its factorization.

111000561011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605900.

The product of its (nonzero) digits is 30, while the sum is 17.

Adding to 111000561011 its reverse (110165000111), we get a palindrome (221165561122).

The spelling of 111000561011 in words is "one hundred eleven billion, five hundred sixty-one thousand, eleven".