1002303045521 has 2 divisors, whose sum is σ = 1002303045522. Its totient is φ = 1002303045520.

The previous prime is 1002303045461. The next prime is 1002303045533. The reversal of 1002303045521 is 1255403032001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 547838305921 + 454464739600 = 740161^2 + 674140^2 .

It is an emirp because it is prime and its reverse (1255403032001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002303045521 is a prime.

It is a super-2 number, since 2×1002303045521² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1002303045571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501151522760 + 501151522761.

It is an arithmetic number, because the mean of its divisors is an integer number (501151522761).

Almost surely, 2^{1002303045521} is an apocalyptic number.

It is an amenable number.

1002303045521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002303045521 is an equidigital number, since it uses as much as digits as its factorization.

1002303045521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 1002303045521 its reverse (1255403032001), we get a palindrome (2257706077522).

The spelling of 1002303045521 in words is "one trillion, two billion, three hundred three million, forty-five thousand, five hundred twenty-one".