11112000012 has 48 divisors (see below), whose sum is σ = 29173580800. Its totient is φ = 3657111120.

The previous prime is 11111999953. The next prime is 11112000019. The reversal of 11112000012 is 21000021111.

It is a happy number.

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 = 11111999958 and 11112000003.

It is not an unprimeable number, because it can be changed into a prime (11112000019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642664 + ... + 659727.

Almost surely, 2^11112000012 is an apocalyptic number.

11112000012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11112000012 is an abundant number, since it is smaller than the sum of its proper divisors (18061580788).

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

11112000012 is a wasteful number, since it uses less digits than its factorization.

11112000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302483 (or 1302475 counting only the distinct ones).

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

Adding to 11112000012 its reverse (21000021111), we get a palindrome (32112021123).

The spelling of 11112000012 in words is "eleven billion, one hundred twelve million, twelve", and thus it is an aban number.