111121023441 has 16 divisors (see below), whose sum is σ = 153293212800. Its totient is φ = 71515519488.

The previous prime is 111121023373. The next prime is 111121023449. The reversal of 111121023441 is 144320121111.

It is not a de Polignac number, because 111121023441 - 2¹¹ = 111121021393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111121023449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 514465 + ... + 697793.

It is an arithmetic number, because the mean of its divisors is an integer number (9580825800).

Almost surely, 2^111121023441 is an apocalyptic number.

It is an amenable number.

111121023441 is a deficient number, since it is larger than the sum of its proper divisors (42172189359).

111121023441 is a wasteful number, since it uses less digits than its factorization.

111121023441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190328.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 111121023441 its reverse (144320121111), we get a palindrome (255441144552).

The spelling of 111121023441 in words is "one hundred eleven billion, one hundred twenty-one million, twenty-three thousand, four hundred forty-one".