2003121102021 has 64 divisors (see below), whose sum is σ = 3157452748800. Its totient is φ = 1119139870464.

The previous prime is 2003121102019. The next prime is 2003121102029. The reversal of 2003121102021 is 1202011213002.

It is not a de Polignac number, because 2003121102021 - 2¹ = 2003121102019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003121102029) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 882186 + ... + 2187348.

It is an arithmetic number, because the mean of its divisors is an integer number (49335199200).

Almost surely, 2^{2003121102021} is an apocalyptic number.

It is an amenable number.

2003121102021 is a deficient number, since it is larger than the sum of its proper divisors (1154331646779).

2003121102021 is a wasteful number, since it uses less digits than its factorization.

2003121102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305290.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2003121102021 its reverse (1202011213002), we get a palindrome (3205132315023).

The spelling of 2003121102021 in words is "two trillion, three billion, one hundred twenty-one million, one hundred two thousand, twenty-one".