10020000221 has 32 divisors (see below), whose sum is σ = 13100486400. Its totient is φ = 7435169280.

The previous prime is 10020000217. The next prime is 10020000241. The reversal of 10020000221 is 12200002001.

It is not a de Polignac number, because 10020000221 - 2² = 10020000217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10020000199 and 10020000208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020000241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132275 + ... + 193743.

It is an arithmetic number, because the mean of its divisors is an integer number (409390200).

Almost surely, 2^10020000221 is an apocalyptic number.

10020000221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10020000221 is a deficient number, since it is larger than the sum of its proper divisors (3080486179).

10020000221 is a wasteful number, since it uses less digits than its factorization.

10020000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61589.

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

Adding to 10020000221 its reverse (12200002001), we get a palindrome (22220002222).

The spelling of 10020000221 in words is "ten billion, twenty million, two hundred twenty-one", and thus it is an aban number.