52215145423121 has 2 divisors, whose sum is σ = 52215145423122. Its totient is φ = 52215145423120.

The previous prime is 52215145423079. The next prime is 52215145423139. The reversal of 52215145423121 is 12132454151225.

52215145423121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50795625681025 + 1419519742096 = 7127105^2 + 1191436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52215145423121 is a prime.

It is not a weakly prime, because it can be changed into another prime (52215145423151) 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, 26107572711560 + 26107572711561.

It is an arithmetic number, because the mean of its divisors is an integer number (26107572711561).

Almost surely, 2^{52215145423121} is an apocalyptic number.

It is an amenable number.

52215145423121 is a deficient number, since it is larger than the sum of its proper divisors (1).

52215145423121 is an equidigital number, since it uses as much as digits as its factorization.

52215145423121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96000, while the sum is 38.

Adding to 52215145423121 its reverse (12132454151225), we get a palindrome (64347599574346).

The spelling of 52215145423121 in words is "fifty-two trillion, two hundred fifteen billion, one hundred forty-five million, four hundred twenty-three thousand, one hundred twenty-one".