1233233301221 has 12 divisors (see below), whose sum is σ = 1280843486052. Its totient is φ = 1187334618624.

The previous prime is 1233233301199. The next prime is 1233233301227. The reversal of 1233233301221 is 1221033323321.

It can be written as a sum of positive squares in 6 ways, for example, as 178516321 + 1233054784900 = 13361^2 + 1110430^2 .

It is not a de Polignac number, because 1233233301221 - 2²² = 1233229106917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233233301227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1780166 + ... + 2373911.

It is an arithmetic number, because the mean of its divisors is an integer number (106736957171).

Almost surely, 2^{1233233301221} is an apocalyptic number.

It is an amenable number.

1233233301221 is a deficient number, since it is larger than the sum of its proper divisors (47610184831).

1233233301221 is an equidigital number, since it uses as much as digits as its factorization.

1233233301221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154488 (or 4154459 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1233233301221 its reverse (1221033323321), we get a palindrome (2454266624542).

The spelling of 1233233301221 in words is "one trillion, two hundred thirty-three billion, two hundred thirty-three million, three hundred one thousand, two hundred twenty-one".