123312021033 has 4 divisors (see below), whose sum is σ = 164416028048. Its totient is φ = 82208014020.

The previous prime is 123312020983. The next prime is 123312021067. The reversal of 123312021033 is 330120213321.

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 not a de Polignac number, because 123312021033 - 2³³ = 114722086441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123312020033) 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, 20552003503 + ... + 20552003508.

It is an arithmetic number, because the mean of its divisors is an integer number (41104007012).

Almost surely, 2^123312021033 is an apocalyptic number.

It is an amenable number.

123312021033 is a deficient number, since it is larger than the sum of its proper divisors (41104007015).

123312021033 is an equidigital number, since it uses as much as digits as its factorization.

123312021033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41104007014.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123312021033 its reverse (330120213321), we get a palindrome (453432234354).

The spelling of 123312021033 in words is "one hundred twenty-three billion, three hundred twelve million, twenty-one thousand, thirty-three".