1111120221 has 16 divisors (see below), whose sum is σ = 1569336768. Its totient is φ = 696864000.

The previous prime is 1111120189. The next prime is 1111120223. The reversal of 1111120221 is 1220211111.

It is not a de Polignac number, because 1111120221 - 2⁵ = 1111120189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111120197 and 1111120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111120223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179071 + ... + 185171.

It is an arithmetic number, because the mean of its divisors is an integer number (98083548).

Almost surely, 2^1111120221 is an apocalyptic number.

It is an amenable number.

1111120221 is a deficient number, since it is larger than the sum of its proper divisors (458216547).

1111120221 is a wasteful number, since it uses less digits than its factorization.

1111120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9692.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1111120221 is about 33333.4699813866. The cubic root of 1111120221 is about 1035.7469992978.

Adding to 1111120221 its reverse (1220211111), we get a palindrome (2331331332).

The spelling of 1111120221 in words is "one billion, one hundred eleven million, one hundred twenty thousand, two hundred twenty-one".