8512342221 has 16 divisors (see below), whose sum is σ = 12296902464. Its totient is φ = 5216865024.

The previous prime is 8512342213. The next prime is 8512342249. The reversal of 8512342221 is 1222432158.

It is not a de Polignac number, because 8512342221 - 2³ = 8512342213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8512342261) 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, 1938606 + ... + 1942991.

It is an arithmetic number, because the mean of its divisors is an integer number (768556404).

Almost surely, 2^8512342221 is an apocalyptic number.

It is an amenable number.

8512342221 is a deficient number, since it is larger than the sum of its proper divisors (3784560243).

8512342221 is a wasteful number, since it uses less digits than its factorization.

8512342221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881660.

The product of its digits is 7680, while the sum is 30.

The square root of 8512342221 is about 92262.3553839810. The cubic root of 8512342221 is about 2041.8148514726.

Adding to 8512342221 its reverse (1222432158), we get a palindrome (9734774379).

The spelling of 8512342221 in words is "eight billion, five hundred twelve million, three hundred forty-two thousand, two hundred twenty-one".