111212112441 has 32 divisors (see below), whose sum is σ = 155151360000. Its totient is φ = 70768047168.

The previous prime is 111212112397. The next prime is 111212112443. The reversal of 111212112441 is 144211212111.

It is not a de Polignac number, because 111212112441 - 2⁶ = 111212112377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111212112443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5357280 + ... + 5377998.

It is an arithmetic number, because the mean of its divisors is an integer number (4848480000).

Almost surely, 2^111212112441 is an apocalyptic number.

It is an amenable number.

111212112441 is a deficient number, since it is larger than the sum of its proper divisors (43939247559).

111212112441 is a wasteful number, since it uses less digits than its factorization.

111212112441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21453.

The product of its digits is 128, while the sum is 21.

Adding to 111212112441 its reverse (144211212111), we get a palindrome (255423324552).

The spelling of 111212112441 in words is "one hundred eleven billion, two hundred twelve million, one hundred twelve thousand, four hundred forty-one".