12503605020281 has 2 divisors, whose sum is σ = 12503605020282. Its totient is φ = 12503605020280.

The previous prime is 12503605020197. The next prime is 12503605020311. The reversal of 12503605020281 is 18202050630521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10913383138681 + 1590221881600 = 3303541^2 + 1261040^2 .

It is a cyclic number.

It is not a de Polignac number, because 12503605020281 - 2⁴² = 8105558509177 is a prime.

It is a super-2 number, since 2×12503605020281² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12503605028281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6251802510140 + 6251802510141.

It is an arithmetic number, because the mean of its divisors is an integer number (6251802510141).

Almost surely, 2^{12503605020281} is an apocalyptic number.

It is an amenable number.

12503605020281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12503605020281 is an equidigital number, since it uses as much as digits as its factorization.

12503605020281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 12503605020281 in words is "twelve trillion, five hundred three billion, six hundred five million, twenty thousand, two hundred eighty-one".