111101122220013 has 64 divisors (see below), whose sum is σ = 175398424876800. Its totient is φ = 69262306467840.

The previous prime is 111101122220003. The next prime is 111101122220041. The reversal of 111101122220013 is 310022221101111.

It is a happy number.

It is not a de Polignac number, because 111101122220013 - 2⁴⁵ = 75916750131181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111101122220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96459645 + ... + 97604637.

It is an arithmetic number, because the mean of its divisors is an integer number (2740600388700).

Almost surely, 2^{111101122220013} is an apocalyptic number.

It is an amenable number.

111101122220013 is a deficient number, since it is larger than the sum of its proper divisors (64297302656787).

111101122220013 is a wasteful number, since it uses less digits than its factorization.

111101122220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146379 (or 1146373 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 111101122220013 its reverse (310022221101111), we get a palindrome (421123343321124).

The spelling of 111101122220013 in words is "one hundred eleven trillion, one hundred one billion, one hundred twenty-two million, two hundred twenty thousand, thirteen".