21001000301 has 8 divisors (see below), whose sum is σ = 21206070840. Its totient is φ = 20796680448.

The previous prime is 21001000259. The next prime is 21001000309. The reversal of 21001000301 is 10300010012.

It can be written as a sum of positive squares in 4 ways, for example, as 2211444676 + 18789555625 = 47026^2 + 137075^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21001000301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001000309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131366 + ... + 243431.

It is an arithmetic number, because the mean of its divisors is an integer number (2650758855).

Almost surely, 2^21001000301 is an apocalyptic number.

It is an amenable number.

21001000301 is a deficient number, since it is larger than the sum of its proper divisors (205070539).

21001000301 is a wasteful number, since it uses less digits than its factorization.

21001000301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375343.

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 21001000301 its reverse (10300010012), we get a palindrome (31301010313).

The spelling of 21001000301 in words is "twenty-one billion, one million, three hundred one", and thus it is an aban number.