111112002100020 has 48 divisors (see below), whose sum is σ = 313022278336320. Its totient is φ = 29448088897536.

The previous prime is 111112002099977. The next prime is 111112002100049. The reversal of 111112002100020 is 20001200211111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111112002099969 and 111112002100005.

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, 5680562925 + ... + 5680582484.

It is an arithmetic number, because the mean of its divisors is an integer number (6521297465340).

Almost surely, 2^{111112002100020} is an apocalyptic number.

111112002100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111112002100020 is an abundant number, since it is smaller than the sum of its proper divisors (201910276236300).

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

111112002100020 is a wasteful number, since it uses less digits than its factorization.

111112002100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11361145584 (or 11361145582 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111112002100020 its reverse (20001200211111), we get a palindrome (131113202311131).

The spelling of 111112002100020 in words is "one hundred eleven trillion, one hundred twelve billion, two million, one hundred thousand, twenty".