211110212121103 has 2 divisors, whose sum is σ = 211110212121104. Its totient is φ = 211110212121102.

The previous prime is 211110212121101. The next prime is 211110212121167. The reversal of 211110212121103 is 301121212011112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211110212121103 - 2¹ = 211110212121101 is a prime.

Together with 211110212121101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211110212121101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555106060551 + 105555106060552.

It is an arithmetic number, because the mean of its divisors is an integer number (105555106060552).

Almost surely, 2^{211110212121103} is an apocalyptic number.

211110212121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

211110212121103 is an equidigital number, since it uses as much as digits as its factorization.

211110212121103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 211110212121103 its reverse (301121212011112), we get a palindrome (512231424132215).

The spelling of 211110212121103 in words is "two hundred eleven trillion, one hundred ten billion, two hundred twelve million, one hundred twenty-one thousand, one hundred three".