21143304001 has 8 divisors (see below), whose sum is σ = 22424261184. Its totient is φ = 19892487120.

The previous prime is 21143303999. The next prime is 21143304011. The reversal of 21143304001 is 10040334112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21143304001 - 2¹ = 21143303999 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 21143304001.

It is not an unprimeable number, because it can be changed into a prime (21143304011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7533631 + ... + 7536436.

It is an arithmetic number, because the mean of its divisors is an integer number (2803032648).

Almost surely, 2^21143304001 is an apocalyptic number.

It is an amenable number.

21143304001 is a deficient number, since it is larger than the sum of its proper divisors (1280957183).

21143304001 is a wasteful number, since it uses less digits than its factorization.

21143304001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15070151.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21143304001 its reverse (10040334112), we get a palindrome (31183638113).

The spelling of 21143304001 in words is "twenty-one billion, one hundred forty-three million, three hundred four thousand, one".