111331021020000 has 120 divisors (see below), whose sum is σ = 365188015346616. Its totient is φ = 29688272256000.

The previous prime is 111331021019989. The next prime is 111331021020059. The reversal of 111331021020000 is 20120133111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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 (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 927698509 + ... + 927818508.

Almost surely, 2^{111331021020000} is an apocalyptic number.

111331021020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111331021020000 is an abundant number, since it is smaller than the sum of its proper divisors (253856994326616).

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

111331021020000 is an equidigital number, since it uses as much as digits as its factorization.

111331021020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855517050 (or 1855517027 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 111331021020000 its reverse (20120133111), we get a palindrome (111351141153111).

The spelling of 111331021020000 in words is "one hundred eleven trillion, three hundred thirty-one billion, twenty-one million, twenty thousand".