111212122203 has 240 divisors, whose sum is σ = 224249389056. Its totient is φ = 54282856320.

The previous prime is 111212122199. The next prime is 111212122247. The reversal of 111212122203 is 302221212111.

It is not a de Polignac number, because 111212122203 - 2² = 111212122199 is a prime.

It is a super-2 number, since 2×111212122203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111212122003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 36787150 + ... + 36790172.

Almost surely, 2^111212122203 is an apocalyptic number.

111212122203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111212122203 is an abundant number, since it is smaller than the sum of its proper divisors (113037266853).

111212122203 is a wasteful number, since it uses less digits than its factorization.

111212122203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111212122203 its reverse (302221212111), we get a palindrome (413433334314).

The spelling of 111212122203 in words is "one hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, two hundred three".