50213012621 has 2 divisors, whose sum is σ = 50213012622. Its totient is φ = 50213012620.

The previous prime is 50213012599. The next prime is 50213012653. The reversal of 50213012621 is 12621031205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29648018596 + 20564994025 = 172186^2 + 143405^2 .

It is a cyclic number.

It is not a de Polignac number, because 50213012621 - 2¹⁸ = 50212750477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50213012671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25106506310 + 25106506311.

It is an arithmetic number, because the mean of its divisors is an integer number (25106506311).

Almost surely, 2^50213012621 is an apocalyptic number.

It is an amenable number.

50213012621 is a deficient number, since it is larger than the sum of its proper divisors (1).

50213012621 is an equidigital number, since it uses as much as digits as its factorization.

50213012621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 50213012621 its reverse (12621031205), we get a palindrome (62834043826).

The spelling of 50213012621 in words is "fifty billion, two hundred thirteen million, twelve thousand, six hundred twenty-one".