201212021434423 has 2 divisors, whose sum is σ = 201212021434424. Its totient is φ = 201212021434422.

The previous prime is 201212021434421. The next prime is 201212021434441. The reversal of 201212021434423 is 324434120212102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201212021434423 - 2¹ = 201212021434421 is a prime.

Together with 201212021434421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201212021434421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606010717211 + 100606010717212.

It is an arithmetic number, because the mean of its divisors is an integer number (100606010717212).

Almost surely, 2^{201212021434423} is an apocalyptic number.

201212021434423 is a deficient number, since it is larger than the sum of its proper divisors (1).

201212021434423 is an equidigital number, since it uses as much as digits as its factorization.

201212021434423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 201212021434423 its reverse (324434120212102), we get a palindrome (525646141646525).

The spelling of 201212021434423 in words is "two hundred one trillion, two hundred twelve billion, twenty-one million, four hundred thirty-four thousand, four hundred twenty-three".