21442314433 has 2 divisors, whose sum is σ = 21442314434. Its totient is φ = 21442314432.

The previous prime is 21442314427. The next prime is 21442314451. The reversal of 21442314433 is 33441324412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19912878769 + 1529435664 = 141113^2 + 39108^2 .

It is a cyclic number.

It is not a de Polignac number, because 21442314433 - 2⁵ = 21442314401 is a prime.

It is a super-2 number, since 2×21442314433² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21442314395 and 21442314404.

It is not a weakly prime, because it can be changed into another prime (21442314403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10721157216 + 10721157217.

It is an arithmetic number, because the mean of its divisors is an integer number (10721157217).

Almost surely, 2^21442314433 is an apocalyptic number.

It is an amenable number.

21442314433 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442314433 is an equidigital number, since it uses as much as digits as its factorization.

21442314433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 31.

Adding to 21442314433 its reverse (33441324412), we get a palindrome (54883638845).

The spelling of 21442314433 in words is "twenty-one billion, four hundred forty-two million, three hundred fourteen thousand, four hundred thirty-three".