21321130221301 has 2 divisors, whose sum is σ = 21321130221302. Its totient is φ = 21321130221300.

The previous prime is 21321130221283. The next prime is 21321130221319. The reversal of 21321130221301 is 10312203112312.

It is a balanced prime because it is at equal distance from previous prime (21321130221283) and next prime (21321130221319).

It can be written as a sum of positive squares in only one way, i.e., 17111045902500 + 4210084318801 = 4136550^2 + 2051849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21321130221301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21321130221371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10660565110650 + 10660565110651.

It is an arithmetic number, because the mean of its divisors is an integer number (10660565110651).

Almost surely, 2^{21321130221301} is an apocalyptic number.

It is an amenable number.

21321130221301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21321130221301 is an equidigital number, since it uses as much as digits as its factorization.

21321130221301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21321130221301 its reverse (10312203112312), we get a palindrome (31633333333613).

The spelling of 21321130221301 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty million, two hundred twenty-one thousand, three hundred one".