12130220302021 has 4 divisors (see below), whose sum is σ = 12144051796972. Its totient is φ = 12116388807072.

The previous prime is 12130220301971. The next prime is 12130220302043. The reversal of 12130220302021 is 12020302203121.

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 7226714945025 + 4903505356996 = 2688255^2 + 2214386^2 .

It is a cyclic number.

It is not a de Polignac number, because 12130220302021 - 2²⁷ = 12130086084293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12130220302021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130220302061) 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, 6915746160 + ... + 6915747913.

It is an arithmetic number, because the mean of its divisors is an integer number (3036012949243).

Almost surely, 2^{12130220302021} is an apocalyptic number.

It is an amenable number.

12130220302021 is a deficient number, since it is larger than the sum of its proper divisors (13831494951).

12130220302021 is an equidigital number, since it uses as much as digits as its factorization.

12130220302021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13831494950.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12130220302021 its reverse (12020302203121), we get a palindrome (24150522505142).

The spelling of 12130220302021 in words is "twelve trillion, one hundred thirty billion, two hundred twenty million, three hundred two thousand, twenty-one".