15224505021 has 12 divisors (see below), whose sum is σ = 23990129280. Its totient is φ = 9226972680.

The previous prime is 15224505013. The next prime is 15224505047. The reversal of 15224505021 is 12050542251.

15224505021 is a `hidden beast` number, since 152 + 2 + 4 + 5 + 0 + 502 + 1 = 666.

It is not a de Polignac number, because 15224505021 - 2³ = 15224505013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15224505001) 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 11 ways as a sum of consecutive naturals, for example, 76891341 + ... + 76891538.

It is an arithmetic number, because the mean of its divisors is an integer number (1999177440).

Almost surely, 2^15224505021 is an apocalyptic number.

15224505021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15224505021 is a deficient number, since it is larger than the sum of its proper divisors (8765624259).

15224505021 is a wasteful number, since it uses less digits than its factorization.

15224505021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153782896 (or 153782893 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 15224505021 in words is "fifteen billion, two hundred twenty-four million, five hundred five thousand, twenty-one".