21232441201 has 2 divisors, whose sum is σ = 21232441202. Its totient is φ = 21232441200.

The previous prime is 21232441199. The next prime is 21232441249. The reversal of 21232441201 is 10214423212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18074113600 + 3158327601 = 134440^2 + 56199^2 .

It is a cyclic number.

It is not a de Polignac number, because 21232441201 - 2¹ = 21232441199 is a prime.

Together with 21232441199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21232441001) 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, 10616220600 + 10616220601.

It is an arithmetic number, because the mean of its divisors is an integer number (10616220601).

Almost surely, 2^21232441201 is an apocalyptic number.

It is an amenable number.

21232441201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232441201 is an equidigital number, since it uses as much as digits as its factorization.

21232441201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21232441201 its reverse (10214423212), we get a palindrome (31446864413).

The spelling of 21232441201 in words is "twenty-one billion, two hundred thirty-two million, four hundred forty-one thousand, two hundred one".