12033312232421 has 4 divisors (see below), whose sum is σ = 12666644455200. Its totient is φ = 11399980009644.

The previous prime is 12033312232399. The next prime is 12033312232471. The reversal of 12033312232421 is 12423221333021.

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 de Polignac number, because none of the positive numbers 2^k-12033312232421 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 (12033312232471) 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, 316666111361 + ... + 316666111398.

It is an arithmetic number, because the mean of its divisors is an integer number (3166661113800).

Almost surely, 2^{12033312232421} is an apocalyptic number.

It is an amenable number.

12033312232421 is a deficient number, since it is larger than the sum of its proper divisors (633332222779).

12033312232421 is an equidigital number, since it uses as much as digits as its factorization.

12033312232421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633332222778.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 12033312232421 its reverse (12423221333021), we get a palindrome (24456533565442).

The spelling of 12033312232421 in words is "twelve trillion, thirty-three billion, three hundred twelve million, two hundred thirty-two thousand, four hundred twenty-one".