10002200221 has 4 divisors (see below), whose sum is σ = 10771600252. Its totient is φ = 9232800192.

The previous prime is 10002200213. The next prime is 10002200231. The reversal of 10002200221 is 12200220001.

10002200221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12200220001 = 12821 ⋅951581.

It can be written as a sum of positive squares in 2 ways, for example, as 1480325625 + 8521874596 = 38475^2 + 92314^2 .

It is a cyclic number.

It is not a de Polignac number, because 10002200221 - 2³ = 10002200213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002200198 and 10002200207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002200231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384699996 + ... + 384700021.

It is an arithmetic number, because the mean of its divisors is an integer number (2692900063).

Almost surely, 2^10002200221 is an apocalyptic number.

It is an amenable number.

10002200221 is a deficient number, since it is larger than the sum of its proper divisors (769400031).

10002200221 is an equidigital number, since it uses as much as digits as its factorization.

10002200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769400030.

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

Adding to 10002200221 its reverse (12200220001), we get a palindrome (22202420222).

The spelling of 10002200221 in words is "ten billion, two million, two hundred thousand, two hundred twenty-one".