21331003232201 has 8 divisors (see below), whose sum is σ = 22975971702600. Its totient is φ = 19686623628672.

The previous prime is 21331003232173. The next prime is 21331003232213. The reversal of 21331003232201 is 10223230013312.

It can be written as a sum of positive squares in 4 ways, for example, as 81890407225 + 21249112824976 = 286165^2 + 4609676^2 .

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

It is not a de Polignac number, because 21331003232201 - 2¹⁰ = 21331003231177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21331003232261) 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, 147141476 + ... + 147286373.

It is an arithmetic number, because the mean of its divisors is an integer number (2871996462825).

Almost surely, 2^{21331003232201} is an apocalyptic number.

It is an amenable number.

21331003232201 is a deficient number, since it is larger than the sum of its proper divisors (1644968470399).

21331003232201 is a wasteful number, since it uses less digits than its factorization.

21331003232201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294433435.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21331003232201 its reverse (10223230013312), we get a palindrome (31554233245513).

The spelling of 21331003232201 in words is "twenty-one trillion, three hundred thirty-one billion, three million, two hundred thirty-two thousand, two hundred one".