15005140221 has 16 divisors (see below), whose sum is σ = 20171980800. Its totient is φ = 9921160368.

The previous prime is 15005140217. The next prime is 15005140229. The reversal of 15005140221 is 12204150051.

It is not a de Polignac number, because 15005140221 - 2² = 15005140217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15005140229) 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 15 ways as a sum of consecutive naturals, for example, 166660 + ... + 240386.

It is an arithmetic number, because the mean of its divisors is an integer number (1260748800).

Almost surely, 2^15005140221 is an apocalyptic number.

It is an amenable number.

15005140221 is a deficient number, since it is larger than the sum of its proper divisors (5166840579).

15005140221 is a wasteful number, since it uses less digits than its factorization.

15005140221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74288.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 15005140221 its reverse (12204150051), we get a palindrome (27209290272).

The spelling of 15005140221 in words is "fifteen billion, five million, one hundred forty thousand, two hundred twenty-one".