211203210020 has 24 divisors (see below), whose sum is σ = 483847354368. Its totient is φ = 76801167200.

The previous prime is 211203209983. The next prime is 211203210047. The reversal of 211203210020 is 20012302112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 211203209977 and 211203210004.

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 7 ways as a sum of consecutive naturals, for example, 480007076 + ... + 480007515.

It is an arithmetic number, because the mean of its divisors is an integer number (20160306432).

Almost surely, 2^211203210020 is an apocalyptic number.

211203210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211203210020 is an abundant number, since it is smaller than the sum of its proper divisors (272644144348).

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

211203210020 is a wasteful number, since it uses less digits than its factorization.

211203210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960014611 (or 960014609 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 211203210020 its reverse (20012302112), we get a palindrome (231215512132).

The spelling of 211203210020 in words is "two hundred eleven billion, two hundred three million, two hundred ten thousand, twenty".