2003121320101 has 16 divisors (see below), whose sum is σ = 2275747488000. Its totient is φ = 1746425396800.

The previous prime is 2003121320099. The next prime is 2003121320143. The reversal of 2003121320101 is 1010231213002.

It is a cyclic number.

It is not a de Polignac number, because 2003121320101 - 2¹ = 2003121320099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003121323101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21024205 + ... + 21119266.

It is an arithmetic number, because the mean of its divisors is an integer number (142234218000).

Almost surely, 2^{2003121320101} is an apocalyptic number.

It is an amenable number.

2003121320101 is a deficient number, since it is larger than the sum of its proper divisors (272626167899).

2003121320101 is a wasteful number, since it uses less digits than its factorization.

2003121320101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42143660.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2003121320101 its reverse (1010231213002), we get a palindrome (3013352533103).

The spelling of 2003121320101 in words is "two trillion, three billion, one hundred twenty-one million, three hundred twenty thousand, one hundred one".