111252241145 has 4 divisors (see below), whose sum is σ = 133502689380. Its totient is φ = 89001792912.

The previous prime is 111252241141. The next prime is 111252241153. The reversal of 111252241145 is 541142252111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70147111609 + 41105129536 = 264853^2 + 202744^2 .

It is a cyclic number.

It is not a de Polignac number, because 111252241145 - 2² = 111252241141 is a prime.

It is a super-2 number, since 2×111252241145² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111252241141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11125224110 + ... + 11125224119.

It is an arithmetic number, because the mean of its divisors is an integer number (33375672345).

Almost surely, 2^111252241145 is an apocalyptic number.

It is an amenable number.

111252241145 is a deficient number, since it is larger than the sum of its proper divisors (22250448235).

111252241145 is an equidigital number, since it uses as much as digits as its factorization.

111252241145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22250448234.

The product of its digits is 3200, while the sum is 29.

Adding to 111252241145 its reverse (541142252111), we get a palindrome (652394493256).

The spelling of 111252241145 in words is "one hundred eleven billion, two hundred fifty-two million, two hundred forty-one thousand, one hundred forty-five".