21000032302201 has 2 divisors, whose sum is σ = 21000032302202. Its totient is φ = 21000032302200.

The previous prime is 21000032302147. The next prime is 21000032302211. The reversal of 21000032302201 is 10220323000012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15955071584400 + 5044960717801 = 3994380^2 + 2246099^2 .

It is a cyclic number.

It is not a de Polignac number, because 21000032302201 - 2²⁹ = 20999495431289 is a prime.

It is not a weakly prime, because it can be changed into another prime (21000032302211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500016151100 + 10500016151101.

It is an arithmetic number, because the mean of its divisors is an integer number (10500016151101).

Almost surely, 2^{21000032302201} is an apocalyptic number.

It is an amenable number.

21000032302201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000032302201 is an equidigital number, since it uses as much as digits as its factorization.

21000032302201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21000032302201 its reverse (10220323000012), we get a palindrome (31220355302213).

The spelling of 21000032302201 in words is "twenty-one trillion, thirty-two million, three hundred two thousand, two hundred one".