12020021220101 has 4 divisors (see below), whose sum is σ = 12020853127500. Its totient is φ = 12019189312704.

The previous prime is 12020021220083. The next prime is 12020021220211. The reversal of 12020021220101 is 10102212002021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11856521488900 + 163499731201 = 3443330^2 + 404351^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020021220101 - 2²⁶ = 12019954111237 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 (12020021220001) 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, 415932026 + ... + 415960923.

It is an arithmetic number, because the mean of its divisors is an integer number (3005213281875).

Almost surely, 2^{12020021220101} is an apocalyptic number.

It is an amenable number.

12020021220101 is a deficient number, since it is larger than the sum of its proper divisors (831907399).

12020021220101 is an equidigital number, since it uses as much as digits as its factorization.

12020021220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831907398.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12020021220101 its reverse (10102212002021), we get a palindrome (22122233222122).

The spelling of 12020021220101 in words is "twelve trillion, twenty billion, twenty-one million, two hundred twenty thousand, one hundred one".