21030310201097 has 2 divisors, whose sum is σ = 21030310201098. Its totient is φ = 21030310201096.

The previous prime is 21030310200947. The next prime is 21030310201163. The reversal of 21030310201097 is 79010201303012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17667722483401 + 3362587717696 = 4203299^2 + 1833736^2 .

It is a cyclic number.

It is not a de Polignac number, because 21030310201097 - 2⁸ = 21030310200841 is a prime.

It is not a weakly prime, because it can be changed into another prime (21030310204097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515155100548 + 10515155100549.

It is an arithmetic number, because the mean of its divisors is an integer number (10515155100549).

Almost surely, 2^{21030310201097} is an apocalyptic number.

It is an amenable number.

21030310201097 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030310201097 is an equidigital number, since it uses as much as digits as its factorization.

21030310201097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The spelling of 21030310201097 in words is "twenty-one trillion, thirty billion, three hundred ten million, two hundred one thousand, ninety-seven".