1223330121 has 20 divisors (see below), whose sum is σ = 1968018052. Its totient is φ = 752817888.

The previous prime is 1223330117. The next prime is 1223330123. The reversal of 1223330121 is 1210333221.

It can be written as a sum of positive squares in 2 ways, for example, as 748569600 + 474760521 = 27360^2 + 21789^2 .

It is not a de Polignac number, because 1223330121 - 2² = 1223330117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1223330094 and 1223330103.

It is not an unprimeable number, because it can be changed into a prime (1223330123) 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 19 ways as a sum of consecutive naturals, for example, 579826 + ... + 581931.

Almost surely, 2^1223330121 is an apocalyptic number.

It is an amenable number.

1223330121 is a deficient number, since it is larger than the sum of its proper divisors (744687931).

1223330121 is a wasteful number, since it uses less digits than its factorization.

1223330121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161782 (or 1161773 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1223330121 is about 34976.1364504429. The cubic root of 1223330121 is about 1069.5010691042.

Adding to 1223330121 its reverse (1210333221), we get a palindrome (2433663342).

The spelling of 1223330121 in words is "one billion, two hundred twenty-three million, three hundred thirty thousand, one hundred twenty-one".