21052302634273 has 2 divisors, whose sum is σ = 21052302634274. Its totient is φ = 21052302634272.

The previous prime is 21052302634211. The next prime is 21052302634283. The reversal of 21052302634273 is 37243620325012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15039101168784 + 6013201465489 = 3878028^2 + 2452183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21052302634273 is a prime.

It is not a weakly prime, because it can be changed into another prime (21052302634283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10526151317136 + 10526151317137.

It is an arithmetic number, because the mean of its divisors is an integer number (10526151317137).

Almost surely, 2^{21052302634273} is an apocalyptic number.

It is an amenable number.

21052302634273 is a deficient number, since it is larger than the sum of its proper divisors (1).

21052302634273 is an equidigital number, since it uses as much as digits as its factorization.

21052302634273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 40.

Adding to 21052302634273 its reverse (37243620325012), we get a palindrome (58295922959285).

The spelling of 21052302634273 in words is "twenty-one trillion, fifty-two billion, three hundred two million, six hundred thirty-four thousand, two hundred seventy-three".