111010220020 has 48 divisors (see below), whose sum is σ = 268188979968. Its totient is φ = 37808582400.

The previous prime is 111010219967. The next prime is 111010220039. The reversal of 111010220020 is 20022010111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111010219979 and 111010220006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2604457 + ... + 2646736.

It is an arithmetic number, because the mean of its divisors is an integer number (5587270416).

Almost surely, 2^111010220020 is an apocalyptic number.

111010220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111010220020 is an abundant number, since it is smaller than the sum of its proper divisors (157178759948).

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

111010220020 is a wasteful number, since it uses less digits than its factorization.

111010220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5251360 (or 5251358 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111010220020 its reverse (20022010111), we get a palindrome (131032230131).

The spelling of 111010220020 in words is "one hundred eleven billion, ten million, two hundred twenty thousand, twenty".