10011111012012 has 96 divisors (see below), whose sum is σ = 25692999171840. Its totient is φ = 3008746827520.

The previous prime is 10011111011983. The next prime is 10011111012017. The reversal of 10011111012012 is 21021011111001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (10011111012017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7636039 + ... + 8850497.

It is an arithmetic number, because the mean of its divisors is an integer number (267635408040).

Almost surely, 2^{10011111012012} is an apocalyptic number.

10011111012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10011111012012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12846499585920).

10011111012012 is an abundant number, since it is smaller than the sum of its proper divisors (15681888159828).

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

10011111012012 is a wasteful number, since it uses less digits than its factorization.

10011111012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214991 (or 1214989 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 10011111012012 its reverse (21021011111001), we get a palindrome (31032122123013).

The spelling of 10011111012012 in words is "ten trillion, eleven billion, one hundred eleven million, twelve thousand, twelve".