111212000100 has 108 divisors (see below), whose sum is σ = 348681964176. Its totient is φ = 29648525760.

The previous prime is 111212000099. The next prime is 111212000117. The reversal of 111212000100 is 1000212111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 3804139 + ... + 3833261.

Almost surely, 2^111212000100 is an apocalyptic number.

111212000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212000100 is an abundant number, since it is smaller than the sum of its proper divisors (237469964076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111212000100 is a wasteful number, since it uses less digits than its factorization.

111212000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33386 (or 33376 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111212000100 its reverse (1000212111), we get a palindrome (112212212211).

The spelling of 111212000100 in words is "one hundred eleven billion, two hundred twelve million, one hundred", and thus it is an aban number.