8721100011 has 16 divisors (see below), whose sum is σ = 13259229984. Its totient is φ = 5051134464.

The previous prime is 8721100007. The next prime is 8721100019. The reversal of 8721100011 is 1100011278.

It is not a de Polignac number, because 8721100011 - 2² = 8721100007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8721100019) 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, 6576336 + ... + 6577661.

It is an arithmetic number, because the mean of its divisors is an integer number (828701874).

Almost surely, 2^8721100011 is an apocalyptic number.

8721100011 is a deficient number, since it is larger than the sum of its proper divisors (4538129973).

8721100011 is a wasteful number, since it uses less digits than its factorization.

8721100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13154030.

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 8721100011 is about 93386.8299654721. The cubic root of 8721100011 is about 2058.3714790478.

Adding to 8721100011 its reverse (1100011278), we get a palindrome (9821111289).

The spelling of 8721100011 in words is "eight billion, seven hundred twenty-one million, one hundred thousand, eleven".