201340334621 has 2 divisors, whose sum is σ = 201340334622. Its totient is φ = 201340334620.

The previous prime is 201340334579. The next prime is 201340334653. The reversal of 201340334621 is 126433043102.

201340334621 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., 167126433721 + 34213900900 = 408811^2 + 184970^2 .

It is a cyclic number.

It is not a de Polignac number, because 201340334621 - 2¹⁸ = 201340072477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201340334821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100670167310 + 100670167311.

It is an arithmetic number, because the mean of its divisors is an integer number (100670167311).

Almost surely, 2^201340334621 is an apocalyptic number.

It is an amenable number.

201340334621 is a deficient number, since it is larger than the sum of its proper divisors (1).

201340334621 is an equidigital number, since it uses as much as digits as its factorization.

201340334621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 201340334621 its reverse (126433043102), we get a palindrome (327773377723).

The spelling of 201340334621 in words is "two hundred one billion, three hundred forty million, three hundred thirty-four thousand, six hundred twenty-one".