21321130033297 has 2 divisors, whose sum is σ = 21321130033298. Its totient is φ = 21321130033296.

The previous prime is 21321130033223. The next prime is 21321130033367. The reversal of 21321130033297 is 79233003112312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20243916456976 + 1077213576321 = 4499324^2 + 1037889^2 .

It is a cyclic number.

It is not a de Polignac number, because 21321130033297 - 2¹⁵ = 21321130000529 is a prime.

It is not a weakly prime, because it can be changed into another prime (21321130093297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10660565016648 + 10660565016649.

It is an arithmetic number, because the mean of its divisors is an integer number (10660565016649).

Almost surely, 2^{21321130033297} is an apocalyptic number.

It is an amenable number.

21321130033297 is a deficient number, since it is larger than the sum of its proper divisors (1).

21321130033297 is an equidigital number, since it uses as much as digits as its factorization.

21321130033297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The spelling of 21321130033297 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty million, thirty-three thousand, two hundred ninety-seven".