21926221702867 has 2 divisors, whose sum is σ = 21926221702868. Its totient is φ = 21926221702866.

The previous prime is 21926221702829. The next prime is 21926221702871. The reversal of 21926221702867 is 76820712262912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21926221702867 - 2³¹ = 21924074219219 is a prime.

It is not a weakly prime, because it can be changed into another prime (21926221732867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10963110851433 + 10963110851434.

It is an arithmetic number, because the mean of its divisors is an integer number (10963110851434).

Almost surely, 2^{21926221702867} is an apocalyptic number.

21926221702867 is a deficient number, since it is larger than the sum of its proper divisors (1).

21926221702867 is an equidigital number, since it uses as much as digits as its factorization.

21926221702867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 21926221702867 in words is "twenty-one trillion, nine hundred twenty-six billion, two hundred twenty-one million, seven hundred two thousand, eight hundred sixty-seven".