1110222221 has 4 divisors (see below), whose sum is σ = 1110299232. Its totient is φ = 1110145212.

The previous prime is 1110222187. The next prime is 1110222257. The reversal of 1110222221 is 1222220111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110222221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110222196 and 1110222205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110222821) 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 3 ways as a sum of consecutive naturals, for example, 9695 + ... + 48108.

It is an arithmetic number, because the mean of its divisors is an integer number (277574808).

Almost surely, 2^1110222221 is an apocalyptic number.

It is an amenable number.

1110222221 is a deficient number, since it is larger than the sum of its proper divisors (77011).

1110222221 is an equidigital number, since it uses as much as digits as its factorization.

1110222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77010.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1110222221 is about 33319.9973139255. The cubic root of 1110222221 is about 1035.4678961407.

Adding to 1110222221 its reverse (1222220111), we get a palindrome (2332442332).

The spelling of 1110222221 in words is "one billion, one hundred ten million, two hundred twenty-two thousand, two hundred twenty-one".