15170148121 has 2 divisors, whose sum is σ = 15170148122. Its totient is φ = 15170148120.

The previous prime is 15170148061. The next prime is 15170148179. The reversal of 15170148121 is 12184107151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14655765721 + 514382400 = 121061^2 + 22680^2 .

It is an emirp because it is prime and its reverse (12184107151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15170148121 - 2¹¹ = 15170146073 is a prime.

It is not a weakly prime, because it can be changed into another prime (15170148821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7585074060 + 7585074061.

It is an arithmetic number, because the mean of its divisors is an integer number (7585074061).

Almost surely, 2^15170148121 is an apocalyptic number.

It is an amenable number.

15170148121 is a deficient number, since it is larger than the sum of its proper divisors (1).

15170148121 is an equidigital number, since it uses as much as digits as its factorization.

15170148121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 31.

The spelling of 15170148121 in words is "fifteen billion, one hundred seventy million, one hundred forty-eight thousand, one hundred twenty-one".