21822863556133 has 2 divisors, whose sum is σ = 21822863556134. Its totient is φ = 21822863556132.

The previous prime is 21822863556061. The next prime is 21822863556163. The reversal of 21822863556133 is 33165536822812.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17155111948129 + 4667751608004 = 4141873^2 + 2160498^2 .

It is a cyclic number.

It is not a de Polignac number, because 21822863556133 - 2²⁹ = 21822326685221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21822863556163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10911431778066 + 10911431778067.

It is an arithmetic number, because the mean of its divisors is an integer number (10911431778067).

Almost surely, 2^{21822863556133} is an apocalyptic number.

It is an amenable number.

21822863556133 is a deficient number, since it is larger than the sum of its proper divisors (1).

21822863556133 is an equidigital number, since it uses as much as digits as its factorization.

21822863556133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12441600, while the sum is 55.

The spelling of 21822863556133 in words is "twenty-one trillion, eight hundred twenty-two billion, eight hundred sixty-three million, five hundred fifty-six thousand, one hundred thirty-three".