21310003201 has 2 divisors, whose sum is σ = 21310003202. Its totient is φ = 21310003200.

The previous prime is 21310003159. The next prime is 21310003219. The reversal of 21310003201 is 10230001312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20112912400 + 1197090801 = 141820^2 + 34599^2 .

It is a cyclic number.

It is not a de Polignac number, because 21310003201 - 2⁹ = 21310002689 is a prime.

It is not a weakly prime, because it can be changed into another prime (21310603201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10655001600 + 10655001601.

It is an arithmetic number, because the mean of its divisors is an integer number (10655001601).

Almost surely, 2^21310003201 is an apocalyptic number.

It is an amenable number.

21310003201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21310003201 is an equidigital number, since it uses as much as digits as its factorization.

21310003201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21310003201 its reverse (10230001312), we get a palindrome (31540004513).

The spelling of 21310003201 in words is "twenty-one billion, three hundred ten million, three thousand, two hundred one".