12021021131233 has 4 divisors (see below), whose sum is σ = 12021553835200. Its totient is φ = 12020488427268.

The previous prime is 12021021131179. The next prime is 12021021131291. The reversal of 12021021131233 is 33213112012021.

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 12021021131233 - 2³³ = 12012431196641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021021131633) 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, 266318133 + ... + 266363266.

It is an arithmetic number, because the mean of its divisors is an integer number (3005388458800).

Almost surely, 2^{12021021131233} is an apocalyptic number.

It is an amenable number.

12021021131233 is a deficient number, since it is larger than the sum of its proper divisors (532703967).

12021021131233 is an equidigital number, since it uses as much as digits as its factorization.

12021021131233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532703966.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12021021131233 its reverse (33213112012021), we get a palindrome (45234133143254).

The spelling of 12021021131233 in words is "twelve trillion, twenty-one billion, twenty-one million, one hundred thirty-one thousand, two hundred thirty-three".