111112221002020 has 144 divisors (see below), whose sum is σ = 274370242386240. Its totient is φ = 37683825312000.

The previous prime is 111112221002017. The next prime is 111112221002051. The reversal of 111112221002020 is 20200122211111.

It is a junction number, because it is equal to n+sod(n) for n = 111112221001985 and 111112221002003.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 107472711 + ... + 108501649.

It is an arithmetic number, because the mean of its divisors is an integer number (1905348905460).

Almost surely, 2^{111112221002020} is an apocalyptic number.

111112221002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111112221002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137185121193120).

111112221002020 is an abundant number, since it is smaller than the sum of its proper divisors (163258021384220).

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

111112221002020 is a wasteful number, since it uses less digits than its factorization.

111112221002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030154 (or 1030145 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111112221002020 its reverse (20200122211111), we get a palindrome (131312343213131).

The spelling of 111112221002020 in words is "one hundred eleven trillion, one hundred twelve billion, two hundred twenty-one million, two thousand, twenty".