1222055105 has 4 divisors (see below), whose sum is σ = 1466466132. Its totient is φ = 977644080.

The previous prime is 1222055101. The next prime is 1222055117. The reversal of 1222055105 is 5015502221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5015502221 = 1259 ⋅3983719.

It can be written as a sum of positive squares in 2 ways, for example, as 126180289 + 1095874816 = 11233^2 + 33104^2 .

It is not a de Polignac number, because 1222055105 - 2² = 1222055101 is a prime.

It is a super-2 number, since 2×1222055105² = 2986837359313122050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222055101) 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, 122205506 + ... + 122205515.

It is an arithmetic number, because the mean of its divisors is an integer number (366616533).

Almost surely, 2^1222055105 is an apocalyptic number.

It is an amenable number.

1222055105 is a deficient number, since it is larger than the sum of its proper divisors (244411027).

1222055105 is an equidigital number, since it uses as much as digits as its factorization.

1222055105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244411026.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 1222055105 is about 34957.9047570074. The cubic root of 1222055105 is about 1069.1293773931.

Adding to 1222055105 its reverse (5015502221), we get a palindrome (6237557326).

The spelling of 1222055105 in words is "one billion, two hundred twenty-two million, fifty-five thousand, one hundred five".