111112100010 has 96 divisors (see below), whose sum is σ = 309599521920. Its totient is φ = 27575627904.

The previous prime is 111112100009. The next prime is 111112100101. The reversal of 111112100010 is 10001211111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111112099965 and 111112100001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 648780 + ... + 801959.

It is an arithmetic number, because the mean of its divisors is an integer number (3224995020).

Almost surely, 2^111112100010 is an apocalyptic number.

111112100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111112100010 is an abundant number, since it is smaller than the sum of its proper divisors (198487421910).

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

111112100010 is a wasteful number, since it uses less digits than its factorization.

111112100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450812 (or 1450809 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111112100010 its reverse (10001211111), we get a palindrome (121113311121).

The spelling of 111112100010 in words is "one hundred eleven billion, one hundred twelve million, one hundred thousand, ten".