10111323221 has 8 divisors (see below), whose sum is σ = 10293842520. Its totient is φ = 9929993472.

The previous prime is 10111323203. The next prime is 10111323241. The reversal of 10111323221 is 12232311101.

10111323221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 357588100 + 9753735121 = 18910^2 + 98761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10111323221 - 2²² = 10107128917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10111323221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111323241) 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 7 ways as a sum of consecutive naturals, for example, 280226 + ... + 314243.

It is an arithmetic number, because the mean of its divisors is an integer number (1286730315).

Almost surely, 2^10111323221 is an apocalyptic number.

It is an amenable number.

10111323221 is a deficient number, since it is larger than the sum of its proper divisors (182519299).

10111323221 is an equidigital number, since it uses as much as digits as its factorization.

10111323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594775.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10111323221 its reverse (12232311101), we get a palindrome (22343634322).

The spelling of 10111323221 in words is "ten billion, one hundred eleven million, three hundred twenty-three thousand, two hundred twenty-one".