1112223221 has 8 divisors (see below), whose sum is σ = 1117639488. Its totient is φ = 1106820000.

The previous prime is 1112223209. The next prime is 1112223253. The reversal of 1112223221 is 1223222111.

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 1112223221 - 2¹⁰ = 1112222197 is a prime.

It is a super-2 number, since 2×1112223221² = 2474080986663229682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1112223221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112226221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196136 + ... + 201726.

It is an arithmetic number, because the mean of its divisors is an integer number (139704936).

Almost surely, 2^1112223221 is an apocalyptic number.

It is an amenable number.

1112223221 is a deficient number, since it is larger than the sum of its proper divisors (5416267).

1112223221 is an equidigital number, since it uses as much as digits as its factorization.

1112223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523.

The product of its digits is 96, while the sum is 17.

The square root of 1112223221 is about 33350.0108095935. The cubic root of 1112223221 is about 1036.0896118254.

Adding to 1112223221 its reverse (1223222111), we get a palindrome (2335445332).

It can be divided in two parts, 11122 and 23221, that added together give a palindrome (34343).

The spelling of 1112223221 in words is "one billion, one hundred twelve million, two hundred twenty-three thousand, two hundred twenty-one".