21442553033113 has 2 divisors, whose sum is σ = 21442553033114. Its totient is φ = 21442553033112.

The previous prime is 21442553033039. The next prime is 21442553033141. The reversal of 21442553033113 is 31133035524412.

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., 21039495655689 + 403057377424 = 4586883^2 + 634868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21442553033113 is a prime.

It is not a weakly prime, because it can be changed into another prime (21442553033173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10721276516556 + 10721276516557.

It is an arithmetic number, because the mean of its divisors is an integer number (10721276516557).

Almost surely, 2^{21442553033113} is an apocalyptic number.

It is an amenable number.

21442553033113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442553033113 is an equidigital number, since it uses as much as digits as its factorization.

21442553033113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 21442553033113 its reverse (31133035524412), we get a palindrome (52575588557525).

The spelling of 21442553033113 in words is "twenty-one trillion, four hundred forty-two billion, five hundred fifty-three million, thirty-three thousand, one hundred thirteen".