1100022221 has 8 divisors (see below), whose sum is σ = 1106656704. Its totient is φ = 1093397760.

The previous prime is 1100022199. The next prime is 1100022299. The reversal of 1100022221 is 1222200011.

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 a de Polignac number, because none of the positive numbers 2^k-1100022221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100025221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401426 + ... + 404156.

It is an arithmetic number, because the mean of its divisors is an integer number (138332088).

Almost surely, 2^1100022221 is an apocalyptic number.

It is an amenable number.

1100022221 is a deficient number, since it is larger than the sum of its proper divisors (6634483).

1100022221 is a wasteful number, since it uses less digits than its factorization.

1100022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1100022221 is about 33166.5828960416. The cubic root of 1100022221 is about 1032.2870664085.

Adding to 1100022221 its reverse (1222200011), we get a palindrome (2322222232).

The spelling of 1100022221 in words is "one billion, one hundred million, twenty-two thousand, two hundred twenty-one".