1011113221 has 8 divisors (see below), whose sum is σ = 1025388000. Its totient is φ = 996888432.

The previous prime is 1011113219. The next prime is 1011113227. The reversal of 1011113221 is 1223111101.

It is a happy number.

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

It is not a de Polignac number, because 1011113221 - 2¹ = 1011113219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011113227) 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 7 ways as a sum of consecutive naturals, for example, 29211 + ... + 53623.

It is an arithmetic number, because the mean of its divisors is an integer number (128173500).

Almost surely, 2^1011113221 is an apocalyptic number.

It is an amenable number.

1011113221 is a deficient number, since it is larger than the sum of its proper divisors (14274779).

1011113221 is an equidigital number, since it uses as much as digits as its factorization.

1011113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24995.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1011113221 is about 31798.0065570155. The cubic root of 1011113221 is about 1003.6907684698.

Adding to 1011113221 its reverse (1223111101), we get a palindrome (2234224322).

It can be divided in two parts, 10111 and 13221, that added together give a palindrome (23332).

The spelling of 1011113221 in words is "one billion, eleven million, one hundred thirteen thousand, two hundred twenty-one".