2103123003121 has 4 divisors (see below), whose sum is σ = 2403569146432. Its totient is φ = 1802676859812.

The previous prime is 2103123003109. The next prime is 2103123003187. The reversal of 2103123003121 is 1213003213012.

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 2103123003121 - 2²¹ = 2103120905969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103123003221) 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, 150223071645 + ... + 150223071658.

It is an arithmetic number, because the mean of its divisors is an integer number (600892286608).

Almost surely, 2^{2103123003121} is an apocalyptic number.

It is an amenable number.

2103123003121 is a deficient number, since it is larger than the sum of its proper divisors (300446143311).

2103123003121 is an equidigital number, since it uses as much as digits as its factorization.

2103123003121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300446143310.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 2103123003121 its reverse (1213003213012), we get a palindrome (3316126216133).

The spelling of 2103123003121 in words is "two trillion, one hundred three billion, one hundred twenty-three million, three thousand, one hundred twenty-one".