21330412001233 has 2 divisors, whose sum is σ = 21330412001234. Its totient is φ = 21330412001232.

The previous prime is 21330412001231. The next prime is 21330412001263. The reversal of 21330412001233 is 33210021403312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11164472803584 + 10165939197649 = 3341328^2 + 3188407^2 .

It is a cyclic number.

It is not a de Polignac number, because 21330412001233 - 2¹ = 21330412001231 is a prime.

It is a super-2 number, since 2×21330412001233² (a number of 27 digits) contains 22 as substring.

Together with 21330412001231, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21330412001198 and 21330412001207.

It is not a weakly prime, because it can be changed into another prime (21330412001231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665206000616 + 10665206000617.

It is an arithmetic number, because the mean of its divisors is an integer number (10665206000617).

Almost surely, 2^{21330412001233} is an apocalyptic number.

It is an amenable number.

21330412001233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21330412001233 is an equidigital number, since it uses as much as digits as its factorization.

21330412001233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21330412001233 its reverse (33210021403312), we get a palindrome (54540433404545).

The spelling of 21330412001233 in words is "twenty-one trillion, three hundred thirty billion, four hundred twelve million, one thousand, two hundred thirty-three".