21342002329 has 2 divisors, whose sum is σ = 21342002330. Its totient is φ = 21342002328.

The previous prime is 21342002323. The next prime is 21342002369. The reversal of 21342002329 is 92320024312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20642505625 + 699496704 = 143675^2 + 26448^2 .

It is a cyclic number.

It is not a de Polignac number, because 21342002329 - 2³ = 21342002321 is a prime.

It is a super-2 number, since 2×21342002329² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21342002297 and 21342002306.

It is not a weakly prime, because it can be changed into another prime (21342002321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671001164 + 10671001165.

It is an arithmetic number, because the mean of its divisors is an integer number (10671001165).

Almost surely, 2^21342002329 is an apocalyptic number.

It is an amenable number.

21342002329 is a deficient number, since it is larger than the sum of its proper divisors (1).

21342002329 is an equidigital number, since it uses as much as digits as its factorization.

21342002329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 21342002329 in words is "twenty-one billion, three hundred forty-two million, two thousand, three hundred twenty-nine".