111121232003 has 4 divisors (see below), whose sum is σ = 117657775080. Its totient is φ = 104584688928.

The previous prime is 111121231993. The next prime is 111121232011. The reversal of 111121232003 is 300232121111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111121232003 - 2¹⁴ = 111121215619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 6536543059 = 111121232003 / (1 + 1 + 1 + 1 + 2 + 1 + 2 + 3 + 2 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111121232023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3268271513 + ... + 3268271546.

It is an arithmetic number, because the mean of its divisors is an integer number (29414443770).

Almost surely, 2^111121232003 is an apocalyptic number.

111121232003 is a deficient number, since it is larger than the sum of its proper divisors (6536543077).

111121232003 is an equidigital number, since it uses as much as digits as its factorization.

111121232003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6536543076.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111121232003 its reverse (300232121111), we get a palindrome (411353353114).

The spelling of 111121232003 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred thirty-two thousand, three".