21315326365301 has 2 divisors, whose sum is σ = 21315326365302. Its totient is φ = 21315326365300.

The previous prime is 21315326365253. The next prime is 21315326365339. The reversal of 21315326365301 is 10356362351312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18651817500625 + 2663508864676 = 4318775^2 + 1632026^2 .

It is a cyclic number.

It is not a de Polignac number, because 21315326365301 - 2¹⁴ = 21315326348917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21315326362301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10657663182650 + 10657663182651.

It is an arithmetic number, because the mean of its divisors is an integer number (10657663182651).

Almost surely, 2^{21315326365301} is an apocalyptic number.

It is an amenable number.

21315326365301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21315326365301 is an equidigital number, since it uses as much as digits as its factorization.

21315326365301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 21315326365301 in words is "twenty-one trillion, three hundred fifteen billion, three hundred twenty-six million, three hundred sixty-five thousand, three hundred one".