111213103 has 2 divisors, whose sum is σ = 111213104. Its totient is φ = 111213102.

The previous prime is 111213101. The next prime is 111213143. The reversal of 111213103 is 301312111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111213103 - 2¹ = 111213101 is a prime.

Together with 111213101, 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 (111213101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606551 + 55606552.

It is an arithmetic number, because the mean of its divisors is an integer number (55606552).

Almost surely, 2^111213103 is an apocalyptic number.

111213103 is a deficient number, since it is larger than the sum of its proper divisors (1).

111213103 is an equidigital number, since it uses as much as digits as its factorization.

111213103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 111213103 is about 10545.7623242704. The cubic root of 111213103 is about 480.8969095417.

Adding to 111213103 its reverse (301312111), we get a palindrome (412525214).

The spelling of 111213103 in words is "one hundred eleven million, two hundred thirteen thousand, one hundred three".