111002013121020 has 96 divisors (see below), whose sum is σ = 355228538466816. Its totient is φ = 25370310393600.

The previous prime is 111002013121007. The next prime is 111002013121033. The reversal of 111002013121020 is 20121310200111.

It is an interprime number because it is at equal distance from previous prime (111002013121007) and next prime (111002013121033).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1454151 + ... + 14970590.

It is an arithmetic number, because the mean of its divisors is an integer number (3700297275696).

Almost surely, 2^{111002013121020} is an apocalyptic number.

111002013121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111002013121020 is an abundant number, since it is smaller than the sum of its proper divisors (244226525345796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111002013121020 is a wasteful number, since it uses less digits than its factorization.

111002013121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16440851 (or 16440849 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111002013121020 its reverse (20121310200111), we get a palindrome (131123323321131).

The spelling of 111002013121020 in words is "one hundred eleven trillion, two billion, thirteen million, one hundred twenty-one thousand, twenty".