211112210021020 has 48 divisors (see below), whose sum is σ = 552730149877248. Its totient is φ = 65801208317760.

The previous prime is 211112210020997. The next prime is 211112210021033. The reversal of 211112210021020 is 20120012211112.

It is a junction number, because it is equal to n+sod(n) for n = 211112210020985 and 211112210021003.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 68542923792 + ... + 68542926871.

It is an arithmetic number, because the mean of its divisors is an integer number (11515211455776).

Almost surely, 2^{211112210021020} is an apocalyptic number.

211112210021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211112210021020 is an abundant number, since it is smaller than the sum of its proper divisors (341617939856228).

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

211112210021020 is a wasteful number, since it uses less digits than its factorization.

211112210021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137085850690 (or 137085850688 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211112210021020 its reverse (20120012211112), we get a palindrome (231232222232132).

The spelling of 211112210021020 in words is "two hundred eleven trillion, one hundred twelve billion, two hundred ten million, twenty-one thousand, twenty".