22131433021 has 2 divisors, whose sum is σ = 22131433022. Its totient is φ = 22131433020.

The previous prime is 22131433013. The next prime is 22131433033. The reversal of 22131433021 is 12033413122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19631932996 + 2499500025 = 140114^2 + 49995^2 .

It is a cyclic number.

It is not a de Polignac number, because 22131433021 - 2³ = 22131433013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22131432983 and 22131433001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131433321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065716510 + 11065716511.

It is an arithmetic number, because the mean of its divisors is an integer number (11065716511).

Almost surely, 2^22131433021 is an apocalyptic number.

It is an amenable number.

22131433021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131433021 is an equidigital number, since it uses as much as digits as its factorization.

22131433021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 22131433021 its reverse (12033413122), we get a palindrome (34164846143).

The spelling of 22131433021 in words is "twenty-two billion, one hundred thirty-one million, four hundred thirty-three thousand, twenty-one".