63275201021 has 2 divisors, whose sum is σ = 63275201022. Its totient is φ = 63275201020.

The previous prime is 63275200993. The next prime is 63275201047. The reversal of 63275201021 is 12010257236.

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., 55878340996 + 7396860025 = 236386^2 + 86005^2 .

It is a cyclic number.

It is not a de Polignac number, because 63275201021 - 2⁶ = 63275200957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63275201051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31637600510 + 31637600511.

It is an arithmetic number, because the mean of its divisors is an integer number (31637600511).

Almost surely, 2^63275201021 is an apocalyptic number.

It is an amenable number.

63275201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

63275201021 is an equidigital number, since it uses as much as digits as its factorization.

63275201021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 63275201021 its reverse (12010257236), we get a palindrome (75285458257).

The spelling of 63275201021 in words is "sixty-three billion, two hundred seventy-five million, two hundred one thousand, twenty-one".