123213252133 has 4 divisors (see below), whose sum is σ = 129698160160. Its totient is φ = 116728344108.

The previous prime is 123213252083. The next prime is 123213252199. The reversal of 123213252133 is 331252312321.

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 123213252133 - 2¹³ = 123213243941 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 (123213250133) 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, 3242453985 + ... + 3242454022.

It is an arithmetic number, because the mean of its divisors is an integer number (32424540040).

Almost surely, 2^123213252133 is an apocalyptic number.

It is an amenable number.

123213252133 is a deficient number, since it is larger than the sum of its proper divisors (6484908027).

123213252133 is an equidigital number, since it uses as much as digits as its factorization.

123213252133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6484908026.

The product of its digits is 6480, while the sum is 28.

Adding to 123213252133 its reverse (331252312321), we get a palindrome (454465564454).

The spelling of 123213252133 in words is "one hundred twenty-three billion, two hundred thirteen million, two hundred fifty-two thousand, one hundred thirty-three".