111213120103 has 2 divisors, whose sum is σ = 111213120104. Its totient is φ = 111213120102.

The previous prime is 111213120061. The next prime is 111213120163. The reversal of 111213120103 is 301021312111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111213120103 - 2¹⁷ = 111212989031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111213120163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606560051 + 55606560052.

It is an arithmetic number, because the mean of its divisors is an integer number (55606560052).

Almost surely, 2^111213120103 is an apocalyptic number.

111213120103 is a deficient number, since it is larger than the sum of its proper divisors (1).

111213120103 is an equidigital number, since it uses as much as digits as its factorization.

111213120103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111213120103 its reverse (301021312111), we get a palindrome (412234432214).

The spelling of 111213120103 in words is "one hundred eleven billion, two hundred thirteen million, one hundred twenty thousand, one hundred three".