21213363061103 has 2 divisors, whose sum is σ = 21213363061104. Its totient is φ = 21213363061102.

The previous prime is 21213363061039. The next prime is 21213363061109. The reversal of 21213363061103 is 30116036331212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21213363061103 - 2⁶ = 21213363061039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21213363061103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21213363061109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606681530551 + 10606681530552.

It is an arithmetic number, because the mean of its divisors is an integer number (10606681530552).

Almost surely, 2^{21213363061103} is an apocalyptic number.

21213363061103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21213363061103 is an equidigital number, since it uses as much as digits as its factorization.

21213363061103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

Adding to 21213363061103 its reverse (30116036331212), we get a palindrome (51329399392315).

The spelling of 21213363061103 in words is "twenty-one trillion, two hundred thirteen billion, three hundred sixty-three million, sixty-one thousand, one hundred three".