2123012333305 has 4 divisors (see below), whose sum is σ = 2547614799972. Its totient is φ = 1698409866640.

The previous prime is 2123012333291. The next prime is 2123012333341. The reversal of 2123012333305 is 5033332103212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1545635751696 + 577376581609 = 1243236^2 + 759853^2 .

It is not a de Polignac number, because 2123012333305 - 2³⁵ = 2088652594937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212301233326 + ... + 212301233335.

It is an arithmetic number, because the mean of its divisors is an integer number (636903699993).

Almost surely, 2^{2123012333305} is an apocalyptic number.

It is an amenable number.

2123012333305 is a deficient number, since it is larger than the sum of its proper divisors (424602466667).

2123012333305 is an equidigital number, since it uses as much as digits as its factorization.

2123012333305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424602466666.

The product of its (nonzero) digits is 9720, while the sum is 28.

Adding to 2123012333305 its reverse (5033332103212), we get a palindrome (7156344436517).

The spelling of 2123012333305 in words is "two trillion, one hundred twenty-three billion, twelve million, three hundred thirty-three thousand, three hundred five".