8710681221 has 144 divisors (see below), whose sum is σ = 15561383040. Its totient is φ = 4794451200.

The previous prime is 8710681211. The next prime is 8710681223. The reversal of 8710681221 is 1221860178.

It is not a de Polignac number, because 8710681221 - 2¹³ = 8710673029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8710681223) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 122685616 + ... + 122685686.

It is an arithmetic number, because the mean of its divisors is an integer number (108065160).

Almost surely, 2^8710681221 is an apocalyptic number.

It is an amenable number.

8710681221 is a deficient number, since it is larger than the sum of its proper divisors (6850701819).

8710681221 is a wasteful number, since it uses less digits than its factorization.

8710681221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 8710681221 is about 93331.0303221817. The cubic root of 8710681221 is about 2057.5514645242.

The spelling of 8710681221 in words is "eight billion, seven hundred ten million, six hundred eighty-one thousand, two hundred twenty-one".