10000202221 has 4 divisors (see below), whose sum is σ = 10017534172. Its totient is φ = 9982870272.

The previous prime is 10000202209. The next prime is 10000202231. The reversal of 10000202221 is 12220200001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12220200001 = 1913 ⋅6387977.

It can be written as a sum of positive squares in 2 ways, for example, as 8928360100 + 1071842121 = 94490^2 + 32739^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000202221 - 2⁹ = 10000201709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000202198 and 10000202207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000202231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8665110 + ... + 8666263.

It is an arithmetic number, because the mean of its divisors is an integer number (2504383543).

Almost surely, 2^10000202221 is an apocalyptic number.

It is an amenable number.

10000202221 is a deficient number, since it is larger than the sum of its proper divisors (17331951).

10000202221 is an equidigital number, since it uses as much as digits as its factorization.

10000202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17331950.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 10000202221 its reverse (12220200001), we get a palindrome (22220402222).

The spelling of 10000202221 in words is "ten billion, two hundred two thousand, two hundred twenty-one".