15421105201 has 2 divisors, whose sum is σ = 15421105202. Its totient is φ = 15421105200.

The previous prime is 15421105181. The next prime is 15421105207. The reversal of 15421105201 is 10250112451.

15421105201 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., 7747520400 + 7673584801 = 88020^2 + 87599^2 .

It is a cyclic number.

It is not a de Polignac number, because 15421105201 - 2¹¹ = 15421103153 is a prime.

It is not a weakly prime, because it can be changed into another prime (15421105207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7710552600 + 7710552601.

It is an arithmetic number, because the mean of its divisors is an integer number (7710552601).

Almost surely, 2^15421105201 is an apocalyptic number.

It is an amenable number.

15421105201 is a deficient number, since it is larger than the sum of its proper divisors (1).

15421105201 is an equidigital number, since it uses as much as digits as its factorization.

15421105201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 15421105201 its reverse (10250112451), we get a palindrome (25671217652).

The spelling of 15421105201 in words is "fifteen billion, four hundred twenty-one million, one hundred five thousand, two hundred one".