1121221113020 has 24 divisors (see below), whose sum is σ = 2398990081824. Its totient is φ = 440026398656.

The previous prime is 1121221113011. The next prime is 1121221113049. The reversal of 1121221113020 is 203111221211.

It is a happy number.

It is a super-2 number, since 2×1121221113020² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121221113020.

It is a congruent number.

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, 528876824 + ... + 528878943.

It is an arithmetic number, because the mean of its divisors is an integer number (99957920076).

Almost surely, 2^{1121221113020} is an apocalyptic number.

1121221113020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121221113020 is an abundant number, since it is smaller than the sum of its proper divisors (1277768968804).

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

1121221113020 is a wasteful number, since it uses less digits than its factorization.

1121221113020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057755829 (or 1057755827 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1121221113020 its reverse (203111221211), we get a palindrome (1324332334231).

The spelling of 1121221113020 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred thirteen thousand, twenty".