211110210020 has 24 divisors (see below), whose sum is σ = 443417095800. Its totient is φ = 84427768832.

The previous prime is 211110210013. The next prime is 211110210023. The reversal of 211110210020 is 20012011112.

It can be written as a sum of positive squares in 4 ways, for example, as 39959210404 + 171150999616 = 199898^2 + 413704^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211110209983 and 211110210010.

It is not an unprimeable number, because it can be changed into a prime (211110210023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 913325 + ... + 1120884.

It is an arithmetic number, because the mean of its divisors is an integer number (18475712325).

Almost surely, 2^211110210020 is an apocalyptic number.

211110210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211110210020 is an abundant number, since it is smaller than the sum of its proper divisors (232306885780).

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

211110210020 is a wasteful number, since it uses less digits than its factorization.

211110210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039407 (or 2039405 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211110210020 its reverse (20012011112), we get a palindrome (231122221132).

The spelling of 211110210020 in words is "two hundred eleven billion, one hundred ten million, two hundred ten thousand, twenty".