21226401013159 has 2 divisors, whose sum is σ = 21226401013160. Its totient is φ = 21226401013158.

The previous prime is 21226401013099. The next prime is 21226401013163. The reversal of 21226401013159 is 95131010462212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21226401013159 - 2¹⁵ = 21226400980391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21226401011159) 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, 10613200506579 + 10613200506580.

It is an arithmetic number, because the mean of its divisors is an integer number (10613200506580).

Almost surely, 2^{21226401013159} is an apocalyptic number.

21226401013159 is a deficient number, since it is larger than the sum of its proper divisors (1).

21226401013159 is an equidigital number, since it uses as much as digits as its factorization.

21226401013159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 21226401013159 in words is "twenty-one trillion, two hundred twenty-six billion, four hundred one million, thirteen thousand, one hundred fifty-nine".