12143203021 has 2 divisors, whose sum is σ = 12143203022. Its totient is φ = 12143203020.

The previous prime is 12143202979. The next prime is 12143203063. The reversal of 12143203021 is 12030234121.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12143202979) and next prime (12143203063).

It can be written as a sum of positive squares in only one way, i.e., 10690526025 + 1452676996 = 103395^2 + 38114^2 .

It is a cyclic number.

It is not a de Polignac number, because 12143203021 - 2¹³ = 12143194829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12143203021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12143203621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071601510 + 6071601511.

It is an arithmetic number, because the mean of its divisors is an integer number (6071601511).

Almost surely, 2^12143203021 is an apocalyptic number.

It is an amenable number.

12143203021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12143203021 is an equidigital number, since it uses as much as digits as its factorization.

12143203021 is an evil number, because the sum of its binary digits is even.

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

Adding to 12143203021 its reverse (12030234121), we get a palindrome (24173437142).

The spelling of 12143203021 in words is "twelve billion, one hundred forty-three million, two hundred three thousand, twenty-one".