21434233201 has 2 divisors, whose sum is σ = 21434233202. Its totient is φ = 21434233200.

The previous prime is 21434233151. The next prime is 21434233211. The reversal of 21434233201 is 10233243412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16569868176 + 4864365025 = 128724^2 + 69745^2 .

It is a cyclic number.

It is not a de Polignac number, because 21434233201 - 2¹³ = 21434225009 is a prime.

It is not a weakly prime, because it can be changed into another prime (21434233211) 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, 10717116600 + 10717116601.

It is an arithmetic number, because the mean of its divisors is an integer number (10717116601).

Almost surely, 2^21434233201 is an apocalyptic number.

It is an amenable number.

21434233201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21434233201 is an equidigital number, since it uses as much as digits as its factorization.

21434233201 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21434233201 its reverse (10233243412), we get a palindrome (31667476613).

The spelling of 21434233201 in words is "twenty-one billion, four hundred thirty-four million, two hundred thirty-three thousand, two hundred one".