206225455024321 has 2 divisors, whose sum is σ = 206225455024322. Its totient is φ = 206225455024320.

The previous prime is 206225455024297. The next prime is 206225455024331. The reversal of 206225455024321 is 123420554522602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117050220050625 + 89175234973696 = 10818975^2 + 9443264^2 .

It is a cyclic number.

It is not a de Polignac number, because 206225455024321 - 2¹¹ = 206225455022273 is a prime.

It is a super-2 number, since 2×206225455024321² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206225455024331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103112727512160 + 103112727512161.

It is an arithmetic number, because the mean of its divisors is an integer number (103112727512161).

Almost surely, 2^{206225455024321} is an apocalyptic number.

It is an amenable number.

206225455024321 is a deficient number, since it is larger than the sum of its proper divisors (1).

206225455024321 is an equidigital number, since it uses as much as digits as its factorization.

206225455024321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 206225455024321 in words is "two hundred six trillion, two hundred twenty-five billion, four hundred fifty-five million, twenty-four thousand, three hundred twenty-one".