111133421121 has 8 divisors (see below), whose sum is σ = 148208894080. Its totient is φ = 74073447792.

The previous prime is 111133421117. The next prime is 111133421129. The reversal of 111133421121 is 121124331111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111133421121 - 2² = 111133421117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111133421129) 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, 3858166 + ... + 3886863.

It is an arithmetic number, because the mean of its divisors is an integer number (18526111760).

Almost surely, 2^111133421121 is an apocalyptic number.

It is an amenable number.

111133421121 is a deficient number, since it is larger than the sum of its proper divisors (37075472959).

111133421121 is an equidigital number, since it uses as much as digits as its factorization.

111133421121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7749815.

The product of its digits is 144, while the sum is 21.

Adding to 111133421121 its reverse (121124331111), we get a palindrome (232257752232).

The spelling of 111133421121 in words is "one hundred eleven billion, one hundred thirty-three million, four hundred twenty-one thousand, one hundred twenty-one".