211112110020 has 96 divisors (see below), whose sum is σ = 683149420800. Its totient is φ = 47712006144.

The previous prime is 211112110009. The next prime is 211112110067. The reversal of 211112110020 is 20011211112.

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

It is a junction number, because it is equal to n+sod(n) for n = 211112109978 and 211112110005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2786485 + ... + 2861244.

It is an arithmetic number, because the mean of its divisors is an integer number (7116139800).

Almost surely, 2^211112110020 is an apocalyptic number.

211112110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211112110020 is an abundant number, since it is smaller than the sum of its proper divisors (472037310780).

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

211112110020 is a wasteful number, since it uses less digits than its factorization.

211112110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5647837 (or 5647835 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211112110020 its reverse (20011211112), we get a palindrome (231123321132).

The spelling of 211112110020 in words is "two hundred eleven billion, one hundred twelve million, one hundred ten thousand, twenty".