2001231223103 has 8 divisors (see below), whose sum is σ = 2287149955200. Its totient is φ = 1715319630360.

The previous prime is 2001231223099. The next prime is 2001231223133. The reversal of 2001231223103 is 3013221321002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001231223103 - 2² = 2001231223099 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 (2001231223133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170053 + ... + 2317646.

It is an arithmetic number, because the mean of its divisors is an integer number (285893744400).

Almost surely, 2^{2001231223103} is an apocalyptic number.

2001231223103 is a deficient number, since it is larger than the sum of its proper divisors (285918732097).

2001231223103 is an equidigital number, since it uses as much as digits as its factorization.

2001231223103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569677.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2001231223103 its reverse (3013221321002), we get a palindrome (5014452544105).

The spelling of 2001231223103 in words is "two trillion, one billion, two hundred thirty-one million, two hundred twenty-three thousand, one hundred three".