21000432133001 has 2 divisors, whose sum is σ = 21000432133002. Its totient is φ = 21000432133000.

The previous prime is 21000432132997. The next prime is 21000432133027. The reversal of 21000432133001 is 10033123400012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19523575265401 + 1476856867600 = 4418549^2 + 1215260^2 .

It is a cyclic number.

It is not a de Polignac number, because 21000432133001 - 2² = 21000432132997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (21000432133081) 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, 10500216066500 + 10500216066501.

It is an arithmetic number, because the mean of its divisors is an integer number (10500216066501).

Almost surely, 2^{21000432133001} is an apocalyptic number.

It is an amenable number.

21000432133001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000432133001 is an equidigital number, since it uses as much as digits as its factorization.

21000432133001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21000432133001 its reverse (10033123400012), we get a palindrome (31033555533013).

The spelling of 21000432133001 in words is "twenty-one trillion, four hundred thirty-two million, one hundred thirty-three thousand, one".