21435112033 has 2 divisors, whose sum is σ = 21435112034. Its totient is φ = 21435112032.

The previous prime is 21435112003. The next prime is 21435112063. The reversal of 21435112033 is 33021153412.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (21435112003) and next prime (21435112063).

It can be written as a sum of positive squares in only one way, i.e., 12622971904 + 8812140129 = 112352^2 + 93873^2 .

It is a cyclic number.

It is not a de Polignac number, because 21435112033 - 2²¹ = 21433014881 is a prime.

It is a super-2 number, since 2×21435112033² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21435111989 and 21435112007.

It is not a weakly prime, because it can be changed into another prime (21435112003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10717556016 + 10717556017.

It is an arithmetic number, because the mean of its divisors is an integer number (10717556017).

Almost surely, 2^21435112033 is an apocalyptic number.

It is an amenable number.

21435112033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21435112033 is an equidigital number, since it uses as much as digits as its factorization.

21435112033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 21435112033 its reverse (33021153412), we get a palindrome (54456265445).

The spelling of 21435112033 in words is "twenty-one billion, four hundred thirty-five million, one hundred twelve thousand, thirty-three".