111110001012 has 18 divisors (see below), whose sum is σ = 280861391538. Its totient is φ = 37036666992.

The previous prime is 111110000999. The next prime is 111110001031. The reversal of 111110001012 is 210100011111.

It can be written as a sum of positive squares in only one way, i.e., 83355773796 + 27754227216 = 288714^2 + 166596^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 = 111110000985 and 111110001003.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 1543194423 + ... + 1543194494.

It is an arithmetic number, because the mean of its divisors is an integer number (15603410641).

Almost surely, 2^111110001012 is an apocalyptic number.

111110001012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111110001012 is an abundant number, since it is smaller than the sum of its proper divisors (169751390526).

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

111110001012 is a wasteful number, since it uses less digits than its factorization.

111110001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086388927 (or 3086388922 counting only the distinct ones).

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

Adding to 111110001012 its reverse (210100011111), we get a palindrome (321210012123).

The spelling of 111110001012 in words is "one hundred eleven billion, one hundred ten million, one thousand, twelve".