21232441001 has 2 divisors, whose sum is σ = 21232441002. Its totient is φ = 21232441000.

The previous prime is 21232440991. The next prime is 21232441019. The reversal of 21232441001 is 10014423212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18494640025 + 2737800976 = 135995^2 + 52324^2 .

It is a cyclic number.

It is not a de Polignac number, because 21232441001 - 2⁶ = 21232440937 is a prime.

It is not a weakly prime, because it can be changed into another prime (21232441201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616220500 + 10616220501.

It is an arithmetic number, because the mean of its divisors is an integer number (10616220501).

Almost surely, 2^21232441001 is an apocalyptic number.

It is an amenable number.

21232441001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232441001 is an equidigital number, since it uses as much as digits as its factorization.

21232441001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21232441001 its reverse (10014423212), we get a palindrome (31246864213).

The spelling of 21232441001 in words is "twenty-one billion, two hundred thirty-two million, four hundred forty-one thousand, one".