1530104540221 has 2 divisors, whose sum is σ = 1530104540222. Its totient is φ = 1530104540220.

The previous prime is 1530104540213. The next prime is 1530104540249. The reversal of 1530104540221 is 1220454010351.

It is an a-pointer prime, because the next prime (1530104540249) can be obtained adding 1530104540221 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1042706476900 + 487398063321 = 1021130^2 + 698139^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530104540221 - 2³ = 1530104540213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1530104540221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1530104540201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765052270110 + 765052270111.

It is an arithmetic number, because the mean of its divisors is an integer number (765052270111).

Almost surely, 2^{1530104540221} is an apocalyptic number.

It is an amenable number.

1530104540221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530104540221 is an equidigital number, since it uses as much as digits as its factorization.

1530104540221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 1530104540221 its reverse (1220454010351), we get a palindrome (2750558550572).

The spelling of 1530104540221 in words is "one trillion, five hundred thirty billion, one hundred four million, five hundred forty thousand, two hundred twenty-one".