2003120332021 has 4 divisors (see below), whose sum is σ = 2003136984544. Its totient is φ = 2003103679500.

The previous prime is 2003120332007. The next prime is 2003120332049. The reversal of 2003120332021 is 1202330213002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2003120332021 - 2⁷ = 2003120331893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2003120332021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003120332921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8144505 + ... + 8386846.

It is an arithmetic number, because the mean of its divisors is an integer number (500784246136).

Almost surely, 2^{2003120332021} is an apocalyptic number.

It is an amenable number.

2003120332021 is a deficient number, since it is larger than the sum of its proper divisors (16652523).

2003120332021 is a wasteful number, since it uses less digits than its factorization.

2003120332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16652522.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 2003120332021 its reverse (1202330213002), we get a palindrome (3205450545023).

The spelling of 2003120332021 in words is "two trillion, three billion, one hundred twenty million, three hundred thirty-two thousand, twenty-one".