10645300514221 has 2 divisors, whose sum is σ = 10645300514222. Its totient is φ = 10645300514220.

The previous prime is 10645300514209. The next prime is 10645300514243. The reversal of 10645300514221 is 12241500354601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9465535245321 + 1179765268900 = 3076611^2 + 1086170^2 .

It is a cyclic number.

It is not a de Polignac number, because 10645300514221 - 2⁹ = 10645300513709 is a prime.

It is a super-2 number, since 2×10645300514221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10645300514201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5322650257110 + 5322650257111.

It is an arithmetic number, because the mean of its divisors is an integer number (5322650257111).

Almost surely, 2^{10645300514221} is an apocalyptic number.

It is an amenable number.

10645300514221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10645300514221 is an equidigital number, since it uses as much as digits as its factorization.

10645300514221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 10645300514221 its reverse (12241500354601), we get a palindrome (22886800868822).

The spelling of 10645300514221 in words is "ten trillion, six hundred forty-five billion, three hundred million, five hundred fourteen thousand, two hundred twenty-one".