21936224193067 has 2 divisors, whose sum is σ = 21936224193068. Its totient is φ = 21936224193066.

The previous prime is 21936224193019. The next prime is 21936224193133. The reversal of 21936224193067 is 76039142263912.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21936224193067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21936224192999 and 21936224193017.

It is not a weakly prime, because it can be changed into another prime (21936224193007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10968112096533 + 10968112096534.

It is an arithmetic number, because the mean of its divisors is an integer number (10968112096534).

Almost surely, 2^{21936224193067} is an apocalyptic number.

21936224193067 is a deficient number, since it is larger than the sum of its proper divisors (1).

21936224193067 is an equidigital number, since it uses as much as digits as its factorization.

21936224193067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 21936224193067 in words is "twenty-one trillion, nine hundred thirty-six billion, two hundred twenty-four million, one hundred ninety-three thousand, sixty-seven".