501063212381 has 2 divisors, whose sum is σ = 501063212382. Its totient is φ = 501063212380.

The previous prime is 501063212303. The next prime is 501063212383. The reversal of 501063212381 is 183212360105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497878416025 + 3184796356 = 705605^2 + 56434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501063212381 is a prime.

It is a super-2 number, since 2×501063212381² (a number of 24 digits) contains 22 as substring.

Together with 501063212383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501063212383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250531606190 + 250531606191.

It is an arithmetic number, because the mean of its divisors is an integer number (250531606191).

Almost surely, 2^501063212381 is an apocalyptic number.

It is an amenable number.

501063212381 is a deficient number, since it is larger than the sum of its proper divisors (1).

501063212381 is an equidigital number, since it uses as much as digits as its factorization.

501063212381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 501063212381 its reverse (183212360105), we get a palindrome (684275572486).

The spelling of 501063212381 in words is "five hundred one billion, sixty-three million, two hundred twelve thousand, three hundred eighty-one".