1113121122020 has 36 divisors (see below), whose sum is σ = 2483145989940. Its totient is φ = 419057361408.

The previous prime is 1113121121863. The next prime is 1113121122073. The reversal of 1113121122020 is 202211213111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 114476662336 + 998644459684 = 338344^2 + 999322^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1113121122020.

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 11 ways as a sum of consecutive naturals, for example, 96284975 + ... + 96296534.

Almost surely, 2^{1113121122020} is an apocalyptic number.

1113121122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113121122020 is an abundant number, since it is smaller than the sum of its proper divisors (1370024867920).

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

1113121122020 is a wasteful number, since it uses less digits than its factorization.

1113121122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192581552 (or 192581533 counting only the distinct ones).

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

Adding to 1113121122020 its reverse (202211213111), we get a palindrome (1315332335131).

The spelling of 1113121122020 in words is "one trillion, one hundred thirteen billion, one hundred twenty-one million, one hundred twenty-two thousand, twenty".