1122221105 has 4 divisors (see below), whose sum is σ = 1346665332. Its totient is φ = 897776880.

The previous prime is 1122221077. The next prime is 1122221143. The reversal of 1122221105 is 5011222211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5011222211 = 281 ⋅17833531.

It can be written as a sum of positive squares in 2 ways, for example, as 572740624 + 549480481 = 23932^2 + 23441^2 .

It is not a de Polignac number, because 1122221105 - 2⁸ = 1122220849 is a prime.

It is a Duffinian 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, 112222106 + ... + 112222115.

It is an arithmetic number, because the mean of its divisors is an integer number (336666333).

Almost surely, 2^1122221105 is an apocalyptic number.

It is an amenable number.

1122221105 is a deficient number, since it is larger than the sum of its proper divisors (224444227).

1122221105 is an equidigital number, since it uses as much as digits as its factorization.

1122221105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224444226.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1122221105 is about 33499.5687285672. The cubic root of 1122221105 is about 1039.1848596048.

Adding to 1122221105 its reverse (5011222211), we get a palindrome (6133443316).

The spelling of 1122221105 in words is "one billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred five".