2123131223233 has 4 divisors (see below), whose sum is σ = 2138405548720. Its totient is φ = 2107856897748.

The previous prime is 2123131223221. The next prime is 2123131223281. The reversal of 2123131223233 is 3323221313212.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-2123131223233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123131223333) 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, 7637162535 + ... + 7637162812.

It is an arithmetic number, because the mean of its divisors is an integer number (534601387180).

Almost surely, 2^{2123131223233} is an apocalyptic number.

It is an amenable number.

2123131223233 is a deficient number, since it is larger than the sum of its proper divisors (15274325487).

2123131223233 is a wasteful number, since it uses less digits than its factorization.

2123131223233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15274325486.

The product of its digits is 7776, while the sum is 28.

Adding to 2123131223233 its reverse (3323221313212), we get a palindrome (5446352536445).

The spelling of 2123131223233 in words is "two trillion, one hundred twenty-three billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty-three".