12010220020121 has 4 divisors (see below), whose sum is σ = 12076574827044. Its totient is φ = 11943865213200.

The previous prime is 12010220020111. The next prime is 12010220020213. The reversal of 12010220020121 is 12102002201021.

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 550065488896 + 11460154531225 = 741664^2 + 3385285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12010220020121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010220020096 and 12010220020105.

It is not an unprimeable number, because it can be changed into a prime (12010220020111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33177403190 + ... + 33177403551.

It is an arithmetic number, because the mean of its divisors is an integer number (3019143706761).

Almost surely, 2^{12010220020121} is an apocalyptic number.

It is an amenable number.

12010220020121 is a deficient number, since it is larger than the sum of its proper divisors (66354806923).

12010220020121 is an equidigital number, since it uses as much as digits as its factorization.

12010220020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66354806922.

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

Adding to 12010220020121 its reverse (12102002201021), we get a palindrome (24112222221142).

The spelling of 12010220020121 in words is "twelve trillion, ten billion, two hundred twenty million, twenty thousand, one hundred twenty-one".