21432333341 has 2 divisors, whose sum is σ = 21432333342. Its totient is φ = 21432333340.

The previous prime is 21432333331. The next prime is 21432333359. The reversal of 21432333341 is 14333323412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20982681316 + 449652025 = 144854^2 + 21205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21432333341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21432333331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10716166670 + 10716166671.

It is an arithmetic number, because the mean of its divisors is an integer number (10716166671).

Almost surely, 2^21432333341 is an apocalyptic number.

It is an amenable number.

21432333341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21432333341 is an equidigital number, since it uses as much as digits as its factorization.

21432333341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 29.

Adding to 21432333341 its reverse (14333323412), we get a palindrome (35765656753).

The spelling of 21432333341 in words is "twenty-one billion, four hundred thirty-two million, three hundred thirty-three thousand, three hundred forty-one".