10000022221 has 64 divisors (see below), whose sum is σ = 12677898240. Its totient is φ = 7698240000.

The previous prime is 10000022209. The next prime is 10000022269. The reversal of 10000022221 is 12222000001.

It is a cyclic number.

It is not a de Polignac number, because 10000022221 - 2⁵ = 10000022189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10000022198 and 10000022207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000022321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36900316 + ... + 36900586.

It is an arithmetic number, because the mean of its divisors is an integer number (198092160).

Almost surely, 2^10000022221 is an apocalyptic number.

It is an amenable number.

10000022221 is a deficient number, since it is larger than the sum of its proper divisors (2677876019).

10000022221 is a wasteful number, since it uses less digits than its factorization.

10000022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506.

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

Adding to 10000022221 its reverse (12222000001), we get a palindrome (22222022222).

It can be divided in two parts, 100000 and 22221, that added together give a palindrome (122221).

The spelling of 10000022221 in words is "ten billion, twenty-two thousand, two hundred twenty-one".