21244224179 has 2 divisors, whose sum is σ = 21244224180. Its totient is φ = 21244224178.

The previous prime is 21244224163. The next prime is 21244224269. The reversal of 21244224179 is 97142244212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21244224179 - 2⁴ = 21244224163 is a prime.

It is not a weakly prime, because it can be changed into another prime (21244224139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10622112089 + 10622112090.

It is an arithmetic number, because the mean of its divisors is an integer number (10622112090).

Almost surely, 2^21244224179 is an apocalyptic number.

21244224179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21244224179 is an equidigital number, since it uses as much as digits as its factorization.

21244224179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 38.

The spelling of 21244224179 in words is "twenty-one billion, two hundred forty-four million, two hundred twenty-four thousand, one hundred seventy-nine".