1223220105 has 24 divisors (see below), whose sum is σ = 2124824832. Its totient is φ = 650975904.

The previous prime is 1223220067. The next prime is 1223220107. The reversal of 1223220105 is 5010223221.

It is not a de Polignac number, because 1223220105 - 2⁸ = 1223219849 is a prime.

It is a super-3 number, since 3×1223220105³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1223220107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8089 + ... + 50118.

It is an arithmetic number, because the mean of its divisors is an integer number (88534368).

Almost surely, 2^1223220105 is an apocalyptic number.

1223220105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1223220105 is a deficient number, since it is larger than the sum of its proper divisors (901604727).

1223220105 is a wasteful number, since it uses less digits than its factorization.

1223220105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58685 (or 58682 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1223220105 is about 34974.5636856273. The cubic root of 1223220105 is about 1069.4690075059.

Adding to 1223220105 its reverse (5010223221), we get a palindrome (6233443326).

The spelling of 1223220105 in words is "one billion, two hundred twenty-three million, two hundred twenty thousand, one hundred five".