501141121501 has 2 divisors, whose sum is σ = 501141121502. Its totient is φ = 501141121500.

The previous prime is 501141121493. The next prime is 501141121511. The reversal of 501141121501 is 105121141105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 486786685401 + 14354436100 = 697701^2 + 119810^2 .

It is a cyclic number.

It is not a de Polignac number, because 501141121501 - 2³ = 501141121493 is a prime.

It is a super-2 number, since 2×501141121501² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501141121511) 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, 250570560750 + 250570560751.

It is an arithmetic number, because the mean of its divisors is an integer number (250570560751).

Almost surely, 2^501141121501 is an apocalyptic number.

It is an amenable number.

501141121501 is a deficient number, since it is larger than the sum of its proper divisors (1).

501141121501 is an equidigital number, since it uses as much as digits as its factorization.

501141121501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 22.

Adding to 501141121501 its reverse (105121141105), we get a palindrome (606262262606).

The spelling of 501141121501 in words is "five hundred one billion, one hundred forty-one million, one hundred twenty-one thousand, five hundred one".