1121105202020 has 24 divisors (see below), whose sum is σ = 2398742076024. Its totient is φ = 439980909056.

The previous prime is 1121105202017. The next prime is 1121105202083. The reversal of 1121105202020 is 202025011211.

It can be written as a sum of positive squares in 4 ways, for example, as 603157263424 + 517947938596 = 776632^2 + 719686^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1121105202020.

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 7 ways as a sum of consecutive naturals, for example, 528822149 + ... + 528824268.

It is an arithmetic number, because the mean of its divisors is an integer number (99947586501).

Almost surely, 2^{1121105202020} is an apocalyptic number.

1121105202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121105202020 is an abundant number, since it is smaller than the sum of its proper divisors (1277636874004).

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

1121105202020 is a wasteful number, since it uses less digits than its factorization.

1121105202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057646479 (or 1057646477 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The spelling of 1121105202020 in words is "one trillion, one hundred twenty-one billion, one hundred five million, two hundred two thousand, twenty".