111012403 has 2 divisors, whose sum is σ = 111012404. Its totient is φ = 111012402.

The previous prime is 111012401. The next prime is 111012427. The reversal of 111012403 is 304210111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111012403 - 2¹ = 111012401 is a prime.

Together with 111012401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111012401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506201 + 55506202.

It is an arithmetic number, because the mean of its divisors is an integer number (55506202).

Almost surely, 2^111012403 is an apocalyptic number.

111012403 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012403 is an equidigital number, since it uses as much as digits as its factorization.

111012403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 111012403 is about 10536.2423567418. The cubic root of 111012403 is about 480.6074528607.

Adding to 111012403 its reverse (304210111), we get a palindrome (415222514).

The spelling of 111012403 in words is "one hundred eleven million, twelve thousand, four hundred three".