203244301042421 has 2 divisors, whose sum is σ = 203244301042422. Its totient is φ = 203244301042420.

The previous prime is 203244301042381. The next prime is 203244301042451. The reversal of 203244301042421 is 124240103442302.

It is a happy number.

203244301042421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200149322887396 + 3094978155025 = 14147414^2 + 1759255^2 .

It is a cyclic number.

It is not a de Polignac number, because 203244301042421 - 2¹⁸ = 203244300780277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203244301042451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101622150521210 + 101622150521211.

It is an arithmetic number, because the mean of its divisors is an integer number (101622150521211).

Almost surely, 2^{203244301042421} is an apocalyptic number.

It is an amenable number.

203244301042421 is a deficient number, since it is larger than the sum of its proper divisors (1).

203244301042421 is an equidigital number, since it uses as much as digits as its factorization.

203244301042421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 203244301042421 its reverse (124240103442302), we get a palindrome (327484404484723).

The spelling of 203244301042421 in words is "two hundred three trillion, two hundred forty-four billion, three hundred one million, forty-two thousand, four hundred twenty-one".