15020126013421 has 2 divisors, whose sum is σ = 15020126013422. Its totient is φ = 15020126013420.

The previous prime is 15020126013391. The next prime is 15020126013443. The reversal of 15020126013421 is 12431062102051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10604538244521 + 4415587768900 = 3256461^2 + 2101330^2 .

It is an emirp because it is prime and its reverse (12431062102051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15020126013421 - 2³³ = 15011536078829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15020126013421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15020126013521) 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, 7510063006710 + 7510063006711.

It is an arithmetic number, because the mean of its divisors is an integer number (7510063006711).

Almost surely, 2^{15020126013421} is an apocalyptic number.

It is an amenable number.

15020126013421 is a deficient number, since it is larger than the sum of its proper divisors (1).

15020126013421 is an equidigital number, since it uses as much as digits as its factorization.

15020126013421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 15020126013421 its reverse (12431062102051), we get a palindrome (27451188115472).

The spelling of 15020126013421 in words is "fifteen trillion, twenty billion, one hundred twenty-six million, thirteen thousand, four hundred twenty-one".