50012211551321 has 2 divisors, whose sum is σ = 50012211551322. Its totient is φ = 50012211551320.

The previous prime is 50012211551213. The next prime is 50012211551333. The reversal of 50012211551321 is 12315511221005.

Together with previous prime (50012211551213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42074215223296 + 7937996328025 = 6486464^2 + 2817445^2 .

It is a cyclic number.

It is not a de Polignac number, because 50012211551321 - 2¹⁰ = 50012211550297 is a prime.

It is not a weakly prime, because it can be changed into another prime (50012211511321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25006105775660 + 25006105775661.

It is an arithmetic number, because the mean of its divisors is an integer number (25006105775661).

Almost surely, 2^{50012211551321} is an apocalyptic number.

It is an amenable number.

50012211551321 is a deficient number, since it is larger than the sum of its proper divisors (1).

50012211551321 is an equidigital number, since it uses as much as digits as its factorization.

50012211551321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 50012211551321 its reverse (12315511221005), we get a palindrome (62327722772326).

The spelling of 50012211551321 in words is "fifty trillion, twelve billion, two hundred eleven million, five hundred fifty-one thousand, three hundred twenty-one".