10000221111 has 24 divisors (see below), whose sum is σ = 14832998544. Its totient is φ = 6489884160.

The previous prime is 10000221097. The next prime is 10000221131. The reversal of 10000221111 is 11112200001.

It is a happy number.

10000221111 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 10000221111 - 2⁵ = 10000221079 is a prime.

It is a super-4 number, since 4×10000221111⁴ (a number of 41 digits) contains 4444 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 10000221093 and 10000221102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000221131) 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 23 ways as a sum of consecutive naturals, for example, 40641 + ... + 147146.

It is an arithmetic number, because the mean of its divisors is an integer number (618041606).

Almost surely, 2^10000221111 is an apocalyptic number.

10000221111 is a deficient number, since it is larger than the sum of its proper divisors (4832777433).

10000221111 is a wasteful number, since it uses less digits than its factorization.

10000221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187951 (or 187948 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10000221111 its reverse (11112200001), we get a palindrome (21112421112).

The spelling of 10000221111 in words is "ten billion, two hundred twenty-one thousand, one hundred eleven".