111211221222203 has 2 divisors, whose sum is σ = 111211221222204. Its totient is φ = 111211221222202.

The previous prime is 111211221222181. The next prime is 111211221222287. The reversal of 111211221222203 is 302222122112111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111211221222203 - 2⁴⁰ = 110111709594427 is a prime.

It is not a weakly prime, because it can be changed into another prime (111211221222403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605610611101 + 55605610611102.

It is an arithmetic number, because the mean of its divisors is an integer number (55605610611102).

Almost surely, 2^{111211221222203} is an apocalyptic number.

111211221222203 is a deficient number, since it is larger than the sum of its proper divisors (1).

111211221222203 is an equidigital number, since it uses as much as digits as its factorization.

111211221222203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 111211221222203 its reverse (302222122112111), we get a palindrome (413433343334314).

The spelling of 111211221222203 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred three".