11100420012 has 48 divisors (see below), whose sum is σ = 28316276352. Its totient is φ = 3356542080.

The previous prime is 11100420007. The next prime is 11100420013. The reversal of 11100420012 is 21002400111.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11100420012.

It is not an unprimeable number, because it can be changed into a prime (11100420013) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 28393 + ... + 151680.

It is an arithmetic number, because the mean of its divisors is an integer number (589922424).

Almost surely, 2^11100420012 is an apocalyptic number.

11100420012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11100420012 is an abundant number, since it is smaller than the sum of its proper divisors (17215856340).

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

11100420012 is a wasteful number, since it uses less digits than its factorization.

11100420012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180558 (or 180556 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11100420012 its reverse (21002400111), we get a palindrome (32102820123).

The spelling of 11100420012 in words is "eleven billion, one hundred million, four hundred twenty thousand, twelve".