111108121454 has 32 divisors (see below), whose sum is σ = 194519871360. Its totient is φ = 47061237600.

The previous prime is 111108121429. The next prime is 111108121477. The reversal of 111108121454 is 454121801111.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2153264 + ... + 2204259.

It is an arithmetic number, because the mean of its divisors is an integer number (6078745980).

Almost surely, 2^111108121454 is an apocalyptic number.

111108121454 is a deficient number, since it is larger than the sum of its proper divisors (83411749906).

111108121454 is a wasteful number, since it uses less digits than its factorization.

111108121454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357616.

The product of its (nonzero) digits is 1280, while the sum is 29.

Adding to 111108121454 its reverse (454121801111), we get a palindrome (565229922565).

The spelling of 111108121454 in words is "one hundred eleven billion, one hundred eight million, one hundred twenty-one thousand, four hundred fifty-four".