1232003231021 has 2 divisors, whose sum is σ = 1232003231022. Its totient is φ = 1232003231020.

The previous prime is 1232003231003. The next prime is 1232003231059. The reversal of 1232003231021 is 1201323002321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 902281513225 + 329721717796 = 949885^2 + 574214^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232003231021 - 2³⁰ = 1230929489197 is a prime.

It is a super-2 number, since 2×1232003231021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1232003230984 and 1232003231002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232003237021) 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 as a sum of consecutive naturals, namely, 616001615510 + 616001615511.

It is an arithmetic number, because the mean of its divisors is an integer number (616001615511).

Almost surely, 2^{1232003231021} is an apocalyptic number.

It is an amenable number.

1232003231021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232003231021 is an equidigital number, since it uses as much as digits as its factorization.

1232003231021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1232003231021 its reverse (1201323002321), we get a palindrome (2433326233342).

The spelling of 1232003231021 in words is "one trillion, two hundred thirty-two billion, three million, two hundred thirty-one thousand, twenty-one".