21310133101297 has 2 divisors, whose sum is σ = 21310133101298. Its totient is φ = 21310133101296.

The previous prime is 21310133101277. The next prime is 21310133101379. The reversal of 21310133101297 is 79210133101312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15493662567601 + 5816470533696 = 3936199^2 + 2411736^2 .

It is a cyclic number.

It is not a de Polignac number, because 21310133101297 - 2¹¹ = 21310133099249 is a prime.

It is not a weakly prime, because it can be changed into another prime (21310133101217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10655066550648 + 10655066550649.

It is an arithmetic number, because the mean of its divisors is an integer number (10655066550649).

Almost surely, 2^{21310133101297} is an apocalyptic number.

It is an amenable number.

21310133101297 is a deficient number, since it is larger than the sum of its proper divisors (1).

21310133101297 is an equidigital number, since it uses as much as digits as its factorization.

21310133101297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The spelling of 21310133101297 in words is "twenty-one trillion, three hundred ten billion, one hundred thirty-three million, one hundred one thousand, two hundred ninety-seven".