21432301801 has 2 divisors, whose sum is σ = 21432301802. Its totient is φ = 21432301800.

The previous prime is 21432301771. The next prime is 21432301831. The reversal of 21432301801 is 10810323412.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (21432301771) and next prime (21432301831).

It can be written as a sum of positive squares in only one way, i.e., 21403690000 + 28611801 = 146300^2 + 5349^2 .

It is a cyclic number.

It is not a de Polignac number, because 21432301801 - 2¹¹ = 21432299753 is a prime.

It is not a weakly prime, because it can be changed into another prime (21432301831) 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, 10716150900 + 10716150901.

It is an arithmetic number, because the mean of its divisors is an integer number (10716150901).

Almost surely, 2^21432301801 is an apocalyptic number.

It is an amenable number.

21432301801 is a deficient number, since it is larger than the sum of its proper divisors (1).

21432301801 is an equidigital number, since it uses as much as digits as its factorization.

21432301801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 21432301801 in words is "twenty-one billion, four hundred thirty-two million, three hundred one thousand, eight hundred one".