10004221221 has 16 divisors (see below), whose sum is σ = 14073474240. Its totient is φ = 6303847680.

The previous prime is 10004221219. The next prime is 10004221229. The reversal of 10004221221 is 12212240001.

It is not a de Polignac number, because 10004221221 - 2¹ = 10004221219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10004221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10004221229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177990 + ... + 227351.

It is an arithmetic number, because the mean of its divisors is an integer number (879592140).

Almost surely, 2^10004221221 is an apocalyptic number.

It is an amenable number.

10004221221 is a deficient number, since it is larger than the sum of its proper divisors (4069253019).

10004221221 is a wasteful number, since it uses less digits than its factorization.

10004221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405796.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10004221221 its reverse (12212240001), we get a palindrome (22216461222).

The spelling of 10004221221 in words is "ten billion, four million, two hundred twenty-one thousand, two hundred twenty-one".