1260563021 has 2 divisors, whose sum is σ = 1260563022. Its totient is φ = 1260563020.

The previous prime is 1260562997. The next prime is 1260563033. The reversal of 1260563021 is 1203650621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1170597796 + 89965225 = 34214^2 + 9485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1260563021 - 2⁶ = 1260562957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1260563621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630281510 + 630281511.

It is an arithmetic number, because the mean of its divisors is an integer number (630281511).

Almost surely, 2^1260563021 is an apocalyptic number.

It is an amenable number.

1260563021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260563021 is an equidigital number, since it uses as much as digits as its factorization.

1260563021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1260563021 is about 35504.4084727517. The cubic root of 1260563021 is about 1080.2431497002.

The spelling of 1260563021 in words is "one billion, two hundred sixty million, five hundred sixty-three thousand, twenty-one".