5321515510121 has 2 divisors, whose sum is σ = 5321515510122. Its totient is φ = 5321515510120.

The previous prime is 5321515510111. The next prime is 5321515510123. The reversal of 5321515510121 is 1210155151235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4298008970896 + 1023506539225 = 2073164^2 + 1011685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5321515510121 is a prime.

Together with 5321515510123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5321515510123) 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, 2660757755060 + 2660757755061.

It is an arithmetic number, because the mean of its divisors is an integer number (2660757755061).

Almost surely, 2^{5321515510121} is an apocalyptic number.

It is an amenable number.

5321515510121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5321515510121 is an equidigital number, since it uses as much as digits as its factorization.

5321515510121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7500, while the sum is 32.

The spelling of 5321515510121 in words is "five trillion, three hundred twenty-one billion, five hundred fifteen million, five hundred ten thousand, one hundred twenty-one".