21102013333111 has 2 divisors, whose sum is σ = 21102013333112. Its totient is φ = 21102013333110.

The previous prime is 21102013333103. The next prime is 21102013333147. The reversal of 21102013333111 is 11133331020112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21102013333111 - 2³ = 21102013333103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21102013333171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551006666555 + 10551006666556.

It is an arithmetic number, because the mean of its divisors is an integer number (10551006666556).

Almost surely, 2^{21102013333111} is an apocalyptic number.

21102013333111 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102013333111 is an equidigital number, since it uses as much as digits as its factorization.

21102013333111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 21102013333111 its reverse (11133331020112), we get a palindrome (32235344353223).

The spelling of 21102013333111 in words is "twenty-one trillion, one hundred two billion, thirteen million, three hundred thirty-three thousand, one hundred eleven".