10001113221 has 32 divisors (see below), whose sum is σ = 14973861888. Its totient is φ = 5885490240.

The previous prime is 10001113211. The next prime is 10001113271. The reversal of 10001113221 is 12231110001.

It is not a de Polignac number, because 10001113221 - 2⁷ = 10001113093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10001113197 and 10001113206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001113211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171591 + ... + 222363.

It is an arithmetic number, because the mean of its divisors is an integer number (467933184).

Almost surely, 2^10001113221 is an apocalyptic number.

10001113221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10001113221 is a deficient number, since it is larger than the sum of its proper divisors (4972748667).

10001113221 is a wasteful number, since it uses less digits than its factorization.

10001113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50961.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 10001113221 its reverse (12231110001), we get a palindrome (22232223222).

The spelling of 10001113221 in words is "ten billion, one million, one hundred thirteen thousand, two hundred twenty-one".