2003121111120 has 160 divisors (see below), whose sum is σ = 6221998219008. Its totient is φ = 533106745344.

The previous prime is 2003121111109. The next prime is 2003121111143. The reversal of 2003121111120 is 211111213002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2003121111120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304561272 + ... + 304567848.

Almost surely, 2^{2003121111120} is an apocalyptic number.

2003121111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2003121111120 is an abundant number, since it is smaller than the sum of its proper divisors (4218877107888).

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

2003121111120 is a wasteful number, since it uses less digits than its factorization.

2003121111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8917 (or 8911 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 2003121111120 its reverse (211111213002), we get a palindrome (2214232324122).

The spelling of 2003121111120 in words is "two trillion, three billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twenty".