5105220601021 has 2 divisors, whose sum is σ = 5105220601022. Its totient is φ = 5105220601020.

The previous prime is 5105220601007. The next prime is 5105220601051. The reversal of 5105220601021 is 1201060225015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4501670297796 + 603550303225 = 2121714^2 + 776885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5105220601021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5105220601051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2552610300510 + 2552610300511.

It is an arithmetic number, because the mean of its divisors is an integer number (2552610300511).

Almost surely, 2^{5105220601021} is an apocalyptic number.

It is an amenable number.

5105220601021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5105220601021 is an equidigital number, since it uses as much as digits as its factorization.

5105220601021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 5105220601021 its reverse (1201060225015), we get a palindrome (6306280826036).

The spelling of 5105220601021 in words is "five trillion, one hundred five billion, two hundred twenty million, six hundred one thousand, twenty-one".