21223213123067 has 2 divisors, whose sum is σ = 21223213123068. Its totient is φ = 21223213123066.

The previous prime is 21223213122997. The next prime is 21223213123087. The reversal of 21223213123067 is 76032131232212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21223213123067 - 2³⁶ = 21154493646331 is a prime.

It is not a weakly prime, because it can be changed into another prime (21223213123087) 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, 10611606561533 + 10611606561534.

It is an arithmetic number, because the mean of its divisors is an integer number (10611606561534).

Almost surely, 2^{21223213123067} is an apocalyptic number.

21223213123067 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223213123067 is an equidigital number, since it uses as much as digits as its factorization.

21223213123067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

Adding to 21223213123067 its reverse (76032131232212), we get a palindrome (97255344355279).

The spelling of 21223213123067 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred thirteen million, one hundred twenty-three thousand, sixty-seven".