1111220112020 has 12 divisors (see below), whose sum is σ = 2333562235284. Its totient is φ = 444488044800.

The previous prime is 1111220111987. The next prime is 1111220112103. The reversal of 1111220112020 is 202110221111.

It can be written as a sum of positive squares in 2 ways, for example, as 427734312196 + 683485799824 = 654014^2 + 826732^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1111220111986 and 1111220112004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27780502781 + ... + 27780502820.

It is an arithmetic number, because the mean of its divisors is an integer number (194463519607).

Almost surely, 2^{1111220112020} is an apocalyptic number.

1111220112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111220112020 is an abundant number, since it is smaller than the sum of its proper divisors (1222342123264).

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

1111220112020 is a wasteful number, since it uses less digits than its factorization.

1111220112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55561005610 (or 55561005608 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1111220112020 its reverse (202110221111), we get a palindrome (1313330333131).

The spelling of 1111220112020 in words is "one trillion, one hundred eleven billion, two hundred twenty million, one hundred twelve thousand, twenty".