21343032001 has 6 divisors (see below), whose sum is σ = 21753331670. Its totient is φ = 20940330528.

The previous prime is 21343031981. The next prime is 21343032043. The reversal of 21343032001 is 10023034312.

It can be written as a sum of positive squares in 3 ways, for example, as 6744351376 + 14598680625 = 82124^2 + 120825^2 .

It is a de Polignac number, because none of the positive numbers 2^k-21343032001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21343032001.

It is not an unprimeable number, because it can be changed into a prime (21343035001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3796236 + ... + 3801853.

Almost surely, 2^21343032001 is an apocalyptic number.

It is an amenable number.

21343032001 is a deficient number, since it is larger than the sum of its proper divisors (410299669).

21343032001 is an frugal number, since it uses more digits than its factorization.

21343032001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7598195 (or 7598142 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21343032001 its reverse (10023034312), we get a palindrome (31366066313).

The spelling of 21343032001 in words is "twenty-one billion, three hundred forty-three million, thirty-two thousand, one".