1112223220 has 12 divisors (see below), whose sum is σ = 2335668804. Its totient is φ = 444889280.

The previous prime is 1112223209. The next prime is 1112223253. The reversal of 1112223220 is 223222111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 834400996 + 277822224 = 28886^2 + 16668^2 .

It is a super-2 number, since 2×1112223220² = 2474080982214336800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1112223194 and 1112223203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27805561 + ... + 27805600.

It is an arithmetic number, because the mean of its divisors is an integer number (194639067).

Almost surely, 2^1112223220 is an apocalyptic number.

1112223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112223220 is an abundant number, since it is smaller than the sum of its proper divisors (1223445584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1112223220 is a wasteful number, since it uses less digits than its factorization.

1112223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55611170 (or 55611168 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1112223220 is about 33350.0107946010. The cubic root of 1112223220 is about 1036.0896115149.

Adding to 1112223220 its reverse (223222111), we get a palindrome (1335445331).

The spelling of 1112223220 in words is "one billion, one hundred twelve million, two hundred twenty-three thousand, two hundred twenty".