111011212021203 has 48 divisors (see below), whose sum is σ = 181968413172000. Its totient is φ = 64649420642304.

The previous prime is 111011212021187. The next prime is 111011212021217. The reversal of 111011212021203 is 302120212110111.

It is a happy number.

It is not a de Polignac number, because 111011212021203 - 2⁴ = 111011212021187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111011212021253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24811888 + ... + 28942221.

It is an arithmetic number, because the mean of its divisors is an integer number (3791008607750).

Almost surely, 2^{111011212021203} is an apocalyptic number.

111011212021203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111011212021203 is a deficient number, since it is larger than the sum of its proper divisors (70957201150797).

111011212021203 is a wasteful number, since it uses less digits than its factorization.

111011212021203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53755076 (or 53755073 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 111011212021203 its reverse (302120212110111), we get a palindrome (413131424131314).

The spelling of 111011212021203 in words is "one hundred eleven trillion, eleven billion, two hundred twelve million, twenty-one thousand, two hundred three".