21330103222331 has 2 divisors, whose sum is σ = 21330103222332. Its totient is φ = 21330103222330.

The previous prime is 21330103222313. The next prime is 21330103222361. The reversal of 21330103222331 is 13322230103312.

Together with previous prime (21330103222313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21330103222331 - 2²⁶ = 21330036113467 is a prime.

It is a super-3 number, since 3×21330103222331³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 21330103222331.

It is not a weakly prime, because it can be changed into another prime (21330103222361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665051611165 + 10665051611166.

It is an arithmetic number, because the mean of its divisors is an integer number (10665051611166).

Almost surely, 2^{21330103222331} is an apocalyptic number.

21330103222331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21330103222331 is an equidigital number, since it uses as much as digits as its factorization.

21330103222331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21330103222331 its reverse (13322230103312), we get a palindrome (34652333325643).

The spelling of 21330103222331 in words is "twenty-one trillion, three hundred thirty billion, one hundred three million, two hundred twenty-two thousand, three hundred thirty-one".