12021333323541 has 4 divisors (see below), whose sum is σ = 16028444431392. Its totient is φ = 8014222215692.

The previous prime is 12021333323533. The next prime is 12021333323557. The reversal of 12021333323541 is 14532333312021.

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 12021333323541 - 2³ = 12021333323533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021333323561) 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, 2003555553921 + ... + 2003555553926.

It is an arithmetic number, because the mean of its divisors is an integer number (4007111107848).

Almost surely, 2^{12021333323541} is an apocalyptic number.

It is an amenable number.

12021333323541 is a deficient number, since it is larger than the sum of its proper divisors (4007111107851).

12021333323541 is an equidigital number, since it uses as much as digits as its factorization.

12021333323541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007111107850.

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 12021333323541 its reverse (14532333312021), we get a palindrome (26553666635562).

The spelling of 12021333323541 in words is "twelve trillion, twenty-one billion, three hundred thirty-three million, three hundred twenty-three thousand, five hundred forty-one".