1121112211 has 8 divisors (see below), whose sum is σ = 1157341680. Its totient is φ = 1085344512.

The previous prime is 1121112169. The next prime is 1121112217. The reversal of 1121112211 is 1122111211.

It is a happy number.

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 1121112211 - 2²¹ = 1119015059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121112191 and 1121112200.

It is not an unprimeable number, because it can be changed into a prime (1121112217) 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, 110506 + ... + 120223.

It is an arithmetic number, because the mean of its divisors is an integer number (144667710).

Almost surely, 2^1121112211 is an apocalyptic number.

1121112211 is a deficient number, since it is larger than the sum of its proper divisors (36229469).

1121112211 is a wasteful number, since it uses less digits than its factorization.

1121112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230885.

The product of its digits is 8, while the sum is 13.

The square root of 1121112211 is about 33483.0137681780. The cubic root of 1121112211 is about 1038.8424655160.

Adding to 1121112211 its reverse (1122111211), we get a palindrome (2243223422).

The spelling of 1121112211 in words is "one billion, one hundred twenty-one million, one hundred twelve thousand, two hundred eleven".