10010020221 has 12 divisors (see below), whose sum is σ = 14547625248. Its totient is φ = 6632405064.

The previous prime is 10010020157. The next prime is 10010020231. The reversal of 10010020221 is 12202001001.

10010020221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10010020221 - 2⁶ = 10010020157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010020231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3410265 + ... + 3413198.

It is an arithmetic number, because the mean of its divisors is an integer number (1212302104).

Almost surely, 2^10010020221 is an apocalyptic number.

It is an amenable number.

10010020221 is a deficient number, since it is larger than the sum of its proper divisors (4537605027).

10010020221 is a wasteful number, since it uses less digits than its factorization.

10010020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823632 (or 6823629 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10010020221 its reverse (12202001001), we get a palindrome (22212021222).

The spelling of 10010020221 in words is "ten billion, ten million, twenty thousand, two hundred twenty-one".