211100212200020 has 48 divisors (see below), whose sum is σ = 520812271784448. Its totient is φ = 70858812485760.

The previous prime is 211100212200013. The next prime is 211100212200023. The reversal of 211100212200020 is 20002212001112.

It is a junction number, because it is equal to n+sod(n) for n = 211100212199968 and 211100212200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100212200023) 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, 36905628644 + ... + 36905634363.

It is an arithmetic number, because the mean of its divisors is an integer number (10850255662176).

Almost surely, 2^{211100212200020} is an apocalyptic number.

211100212200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211100212200020 is an abundant number, since it is smaller than the sum of its proper divisors (309712059584428).

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

211100212200020 is a wasteful number, since it uses less digits than its factorization.

211100212200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73811263040 (or 73811263038 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211100212200020 its reverse (20002212001112), we get a palindrome (231102424201132).

The spelling of 211100212200020 in words is "two hundred eleven trillion, one hundred billion, two hundred twelve million, two hundred thousand, twenty".