8772668020221 has 24 divisors (see below), whose sum is σ = 13610056441824. Its totient is φ = 5011674988320.

The previous prime is 8772668020211. The next prime is 8772668020223. The reversal of 8772668020221 is 1220208662778.

It is not a de Polignac number, because 8772668020221 - 2²³ = 8772659631613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8772668020223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7029490 + ... + 8182851.

It is an arithmetic number, because the mean of its divisors is an integer number (567085685076).

Almost surely, 2^{8772668020221} is an apocalyptic number.

It is an amenable number.

8772668020221 is a deficient number, since it is larger than the sum of its proper divisors (4837388421603).

8772668020221 is a wasteful number, since it uses less digits than its factorization.

8772668020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15216281 (or 15216274 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 8772668020221 in words is "eight trillion, seven hundred seventy-two billion, six hundred sixty-eight million, twenty thousand, two hundred twenty-one".