111122011020 has 24 divisors (see below), whose sum is σ = 311141631024. Its totient is φ = 29632536256.

The previous prime is 111122011003. The next prime is 111122011057. The reversal of 111122011020 is 20110221111.

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 = 111122010987 and 111122011005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926016699 + ... + 926016818.

It is an arithmetic number, because the mean of its divisors is an integer number (12964234626).

Almost surely, 2^111122011020 is an apocalyptic number.

111122011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122011020 is an abundant number, since it is smaller than the sum of its proper divisors (200019620004).

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

111122011020 is a wasteful number, since it uses less digits than its factorization.

111122011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852033529 (or 1852033527 counting only the distinct ones).

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

Adding to 111122011020 its reverse (20110221111), we get a palindrome (131232232131).

The spelling of 111122011020 in words is "one hundred eleven billion, one hundred twenty-two million, eleven thousand, twenty".