201421303243 has 2 divisors, whose sum is σ = 201421303244. Its totient is φ = 201421303242.

The previous prime is 201421303219. The next prime is 201421303283. The reversal of 201421303243 is 342303124102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201421303243 - 2⁵ = 201421303211 is a prime.

It is not a weakly prime, because it can be changed into another prime (201421303283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100710651621 + 100710651622.

It is an arithmetic number, because the mean of its divisors is an integer number (100710651622).

Almost surely, 2^201421303243 is an apocalyptic number.

201421303243 is a deficient number, since it is larger than the sum of its proper divisors (1).

201421303243 is an equidigital number, since it uses as much as digits as its factorization.

201421303243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 201421303243 its reverse (342303124102), we get a palindrome (543724427345).

The spelling of 201421303243 in words is "two hundred one billion, four hundred twenty-one million, three hundred three thousand, two hundred forty-three".