111432420441 has 8 divisors (see below), whose sum is σ = 165085067360. Its totient is φ = 74288280276.

The previous prime is 111432420431. The next prime is 111432420493. The reversal of 111432420441 is 144024234111.

It is not a de Polignac number, because 111432420441 - 2¹⁷ = 111432289369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4127126683 = 111432420441 / (1 + 1 + 1 + 4 + 3 + 2 + 4 + 2 + 0 + 4 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111432420431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2063563315 + ... + 2063563368.

It is an arithmetic number, because the mean of its divisors is an integer number (20635633420).

Almost surely, 2^111432420441 is an apocalyptic number.

It is an amenable number.

111432420441 is a deficient number, since it is larger than the sum of its proper divisors (53652646919).

111432420441 is an equidigital number, since it uses as much as digits as its factorization.

111432420441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127126692 (or 4127126686 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 111432420441 its reverse (144024234111), we get a palindrome (255456654552).

The spelling of 111432420441 in words is "one hundred eleven billion, four hundred thirty-two million, four hundred twenty thousand, four hundred forty-one".