111123440141 has 12 divisors (see below), whose sum is σ = 129467742300. Its totient is φ = 95100042240.

The previous prime is 111123440101. The next prime is 111123440143. The reversal of 111123440141 is 141044321111.

It can be written as a sum of positive squares in 2 ways, for example, as 76510326025 + 34613114116 = 276605^2 + 186046^2 .

It is not a de Polignac number, because 111123440141 - 2¹⁴ = 111123423757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111123440143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1737566 + ... + 1800383.

It is an arithmetic number, because the mean of its divisors is an integer number (10788978525).

Almost surely, 2^111123440141 is an apocalyptic number.

It is an amenable number.

111123440141 is a deficient number, since it is larger than the sum of its proper divisors (18344302159).

111123440141 is an equidigital number, since it uses as much as digits as its factorization.

111123440141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538604 (or 3538597 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 111123440141 its reverse (141044321111), we get a palindrome (252167761252).

The spelling of 111123440141 in words is "one hundred eleven billion, one hundred twenty-three million, four hundred forty thousand, one hundred forty-one".