1232311213021 has 6 divisors (see below), whose sum is σ = 1433504880510. Its totient is φ = 1056266753976.

The previous prime is 1232311212997. The next prime is 1232311213087. The reversal of 1232311213021 is 1203121132321.

It can be written as a sum of positive squares in only one way, i.e., 1080414724900 + 151896488121 = 1039430^2 + 389739^2 .

It is not a de Polignac number, because 1232311213021 - 2¹³ = 1232311204829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232311212983 and 1232311213001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232311213421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12574604166 + ... + 12574604263.

It is an arithmetic number, because the mean of its divisors is an integer number (238917480085).

Almost surely, 2^{1232311213021} is an apocalyptic number.

It is an amenable number.

1232311213021 is a deficient number, since it is larger than the sum of its proper divisors (201193667489).

1232311213021 is an equidigital number, since it uses as much as digits as its factorization.

1232311213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25149208443 (or 25149208436 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1232311213021 its reverse (1203121132321), we get a palindrome (2435432345342).

The spelling of 1232311213021 in words is "one trillion, two hundred thirty-two billion, three hundred eleven million, two hundred thirteen thousand, twenty-one".