1120203124021 has 16 divisors (see below), whose sum is σ = 1248578962560. Its totient is φ = 998774599680.

The previous prime is 1120203123961. The next prime is 1120203124037. The reversal of 1120203124021 is 1204213020211.

It is a de Polignac number, because none of the positive numbers 2^k-1120203124021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1120203124021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120203724021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8805456 + ... + 8931766.

It is an arithmetic number, because the mean of its divisors is an integer number (78036185160).

Almost surely, 2^{1120203124021} is an apocalyptic number.

It is an amenable number.

1120203124021 is a deficient number, since it is larger than the sum of its proper divisors (128375838539).

1120203124021 is a wasteful number, since it uses less digits than its factorization.

1120203124021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153804.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1120203124021 its reverse (1204213020211), we get a palindrome (2324416144232).

The spelling of 1120203124021 in words is "one trillion, one hundred twenty billion, two hundred three million, one hundred twenty-four thousand, twenty-one".