21422011033 has 2 divisors, whose sum is σ = 21422011034. Its totient is φ = 21422011032.

The previous prime is 21422011021. The next prime is 21422011057. The reversal of 21422011033 is 33011022412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11690583129 + 9731427904 = 108123^2 + 98648^2 .

It is a cyclic number.

It is not a de Polignac number, because 21422011033 - 2⁵ = 21422011001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21422011033.

It is not a weakly prime, because it can be changed into another prime (21422011333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10711005516 + 10711005517.

It is an arithmetic number, because the mean of its divisors is an integer number (10711005517).

Almost surely, 2^21422011033 is an apocalyptic number.

It is an amenable number.

21422011033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21422011033 is an equidigital number, since it uses as much as digits as its factorization.

21422011033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21422011033 its reverse (33011022412), we get a palindrome (54433033445).

The spelling of 21422011033 in words is "twenty-one billion, four hundred twenty-two million, eleven thousand, thirty-three".