111211100003 has 4 divisors (see below), whose sum is σ = 111529756800. Its totient is φ = 110892443208.

The previous prime is 111211099957. The next prime is 111211100023. The reversal of 111211100003 is 300001112111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300001112111 = 311 ⋅964633801.

It is a cyclic number.

It is not a de Polignac number, because 111211100003 - 2¹⁴ = 111211083619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111211100023) 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, 159327875 + ... + 159328572.

It is an arithmetic number, because the mean of its divisors is an integer number (27882439200).

Almost surely, 2^111211100003 is an apocalyptic number.

111211100003 is a deficient number, since it is larger than the sum of its proper divisors (318656797).

111211100003 is an equidigital number, since it uses as much as digits as its factorization.

111211100003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318656796.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 111211100003 its reverse (300001112111), we get a palindrome (411212212114).

The spelling of 111211100003 in words is "one hundred eleven billion, two hundred eleven million, one hundred thousand, three".