11102121212111 has 2 divisors, whose sum is σ = 11102121212112. Its totient is φ = 11102121212110.

The previous prime is 11102121212089. The next prime is 11102121212113. The reversal of 11102121212111 is 11121212120111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11102121212111 - 2¹⁴ = 11102121195727 is a prime.

Together with 11102121212113, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11102121212111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11102121212113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551060606055 + 5551060606056.

It is an arithmetic number, because the mean of its divisors is an integer number (5551060606056).

Almost surely, 2^{11102121212111} is an apocalyptic number.

11102121212111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102121212111 is an equidigital number, since it uses as much as digits as its factorization.

11102121212111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11102121212111 its reverse (11121212120111), we get a palindrome (22223333332222).

The spelling of 11102121212111 in words is "eleven trillion, one hundred two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred eleven".