21332240341 has 2 divisors, whose sum is σ = 21332240342. Its totient is φ = 21332240340.

The previous prime is 21332240317. The next prime is 21332240351. The reversal of 21332240341 is 14304223312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19868030116 + 1464210225 = 140954^2 + 38265^2 .

It is a cyclic number.

It is not a de Polignac number, because 21332240341 - 2⁵ = 21332240309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21332240351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666120170 + 10666120171.

It is an arithmetic number, because the mean of its divisors is an integer number (10666120171).

Almost surely, 2^21332240341 is an apocalyptic number.

It is an amenable number.

21332240341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332240341 is an equidigital number, since it uses as much as digits as its factorization.

21332240341 is an evil number, because the sum of its binary digits is even.

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

Adding to 21332240341 its reverse (14304223312), we get a palindrome (35636463653).

The spelling of 21332240341 in words is "twenty-one billion, three hundred thirty-two million, two hundred forty thousand, three hundred forty-one".