12011020330021 has 4 divisors (see below), whose sum is σ = 12266573954112. Its totient is φ = 11755466705932.

The previous prime is 12011020330009. The next prime is 12011020330061. The reversal of 12011020330021 is 12003302011021.

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 12011020330021 - 2¹⁵ = 12011020297253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011020329977 and 12011020330004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011020330061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127776811975 + ... + 127776812068.

It is an arithmetic number, because the mean of its divisors is an integer number (3066643488528).

Almost surely, 2^{12011020330021} is an apocalyptic number.

It is an amenable number.

12011020330021 is a deficient number, since it is larger than the sum of its proper divisors (255553624091).

12011020330021 is an equidigital number, since it uses as much as digits as its factorization.

12011020330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255553624090.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12011020330021 its reverse (12003302011021), we get a palindrome (24014322341042).

The spelling of 12011020330021 in words is "twelve trillion, eleven billion, twenty million, three hundred thirty thousand, twenty-one".