111212120210203 has 2 divisors, whose sum is σ = 111212120210204. Its totient is φ = 111212120210202.

The previous prime is 111212120210201. The next prime is 111212120210237. The reversal of 111212120210203 is 302012021212111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111212120210203 - 2¹ = 111212120210201 is a prime.

Together with 111212120210201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111212120210201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606060105101 + 55606060105102.

It is an arithmetic number, because the mean of its divisors is an integer number (55606060105102).

Almost surely, 2^{111212120210203} is an apocalyptic number.

111212120210203 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212120210203 is an equidigital number, since it uses as much as digits as its factorization.

111212120210203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111212120210203 its reverse (302012021212111), we get a palindrome (413224141422314).

The spelling of 111212120210203 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twenty million, two hundred ten thousand, two hundred three".