11112121021103 has 2 divisors, whose sum is σ = 11112121021104. Its totient is φ = 11112121021102.

The previous prime is 11112121021091. The next prime is 11112121021247. The reversal of 11112121021103 is 30112012121111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11112121021103 - 2²² = 11112116826799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112121027103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556060510551 + 5556060510552.

It is an arithmetic number, because the mean of its divisors is an integer number (5556060510552).

Almost surely, 2^{11112121021103} is an apocalyptic number.

11112121021103 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112121021103 is an equidigital number, since it uses as much as digits as its factorization.

11112121021103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 11112121021103 its reverse (30112012121111), we get a palindrome (41224133142214).

The spelling of 11112121021103 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-one million, twenty-one thousand, one hundred three".