12020320233021 has 16 divisors (see below), whose sum is σ = 16724042605440. Its totient is φ = 7665077291520.

The previous prime is 12020320233017. The next prime is 12020320233041. The reversal of 12020320233021 is 12033202302021.

It is a happy number.

It is not a de Polignac number, because 12020320233021 - 2² = 12020320233017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020320233001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10638081 + ... + 11713641.

It is an arithmetic number, because the mean of its divisors is an integer number (1045252662840).

Almost surely, 2^{12020320233021} is an apocalyptic number.

It is an amenable number.

12020320233021 is a deficient number, since it is larger than the sum of its proper divisors (4703722372419).

12020320233021 is a wasteful number, since it uses less digits than its factorization.

12020320233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237556.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 12020320233021 its reverse (12033202302021), we get a palindrome (24053522535042).

The spelling of 12020320233021 in words is "twelve trillion, twenty billion, three hundred twenty million, two hundred thirty-three thousand, twenty-one".