10111033221 has 4 divisors (see below), whose sum is σ = 13481377632. Its totient is φ = 6740688812.

The previous prime is 10111033211. The next prime is 10111033241. The reversal of 10111033221 is 12233011101.

It is a happy number.

10111033221 is digitally balanced in base 2, 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10111033221 - 2²¹ = 10108936069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10111033221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111033211) 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 3 ways as a sum of consecutive naturals, for example, 1685172201 + ... + 1685172206.

It is an arithmetic number, because the mean of its divisors is an integer number (3370344408).

Almost surely, 2^10111033221 is an apocalyptic number.

It is an amenable number.

10111033221 is a deficient number, since it is larger than the sum of its proper divisors (3370344411).

10111033221 is an equidigital number, since it uses as much as digits as its factorization.

10111033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370344410.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10111033221 its reverse (12233011101), we get a palindrome (22344044322).

The spelling of 10111033221 in words is "ten billion, one hundred eleven million, thirty-three thousand, two hundred twenty-one".