1223303121 has 32 divisors (see below), whose sum is σ = 1896483840. Its totient is φ = 778377600.

The previous prime is 1223303113. The next prime is 1223303129. The reversal of 1223303121 is 1213033221.

1223303121 is a `hidden beast` number, since 1 + 22 + 330 + 312 + 1 = 666.

1223303121 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1223303113) and next prime (1223303129).

It is not a de Polignac number, because 1223303121 - 2³ = 1223303113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223303094 and 1223303103.

It is not an unprimeable number, because it can be changed into a prime (1223303129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51091 + ... + 71111.

It is an arithmetic number, because the mean of its divisors is an integer number (59265120).

Almost surely, 2^1223303121 is an apocalyptic number.

It is an amenable number.

1223303121 is a deficient number, since it is larger than the sum of its proper divisors (673180719).

1223303121 is a wasteful number, since it uses less digits than its factorization.

1223303121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20134 (or 20128 counting only the distinct ones).

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

The square root of 1223303121 is about 34975.7504708620. The cubic root of 1223303121 is about 1069.4932007617.

Adding to 1223303121 its reverse (1213033221), we get a palindrome (2436336342).

The spelling of 1223303121 in words is "one billion, two hundred twenty-three million, three hundred three thousand, one hundred twenty-one".