15244045221 has 32 divisors (see below), whose sum is σ = 21169814400. Its totient is φ = 9749329920.

The previous prime is 15244045213. The next prime is 15244045237. The reversal of 15244045221 is 12254044251.

It is not a de Polignac number, because 15244045221 - 2³ = 15244045213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15244046221) 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 in 31 ways as a sum of consecutive naturals, for example, 5841565 + ... + 5844173.

It is an arithmetic number, because the mean of its divisors is an integer number (661556700).

Almost surely, 2^15244045221 is an apocalyptic number.

It is an amenable number.

15244045221 is a deficient number, since it is larger than the sum of its proper divisors (5925769179).

15244045221 is a wasteful number, since it uses less digits than its factorization.

15244045221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429.

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 15244045221 its reverse (12254044251), we get a palindrome (27498089472).

The spelling of 15244045221 in words is "fifteen billion, two hundred forty-four million, forty-five thousand, two hundred twenty-one".