1121111222 has 48 divisors (see below), whose sum is σ = 2161775616. Its totient is φ = 426610800.

The previous prime is 1121111209. The next prime is 1121111227. The reversal of 1121111222 is 2221111211.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1121111197 and 1121111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121111227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65147 + ... + 80537.

It is an arithmetic number, because the mean of its divisors is an integer number (45036992).

Almost surely, 2^1121111222 is an apocalyptic number.

1121111222 is a deficient number, since it is larger than the sum of its proper divisors (1040664394).

1121111222 is a wasteful number, since it uses less digits than its factorization.

1121111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15465 (or 15454 counting only the distinct ones).

The product of its digits is 16, while the sum is 14.

The square root of 1121111222 is about 33482.9989994923. The cubic root of 1121111222 is about 1038.8421600410.

Adding to 1121111222 its reverse (2221111211), we get a palindrome (3342222433).

The spelling of 1121111222 in words is "one billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twenty-two".