211020210020 has 48 divisors (see below), whose sum is σ = 462480883200. Its totient is φ = 80725704576.

The previous prime is 211020210013. The next prime is 211020210029. The reversal of 211020210020 is 20012020112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 211020209983 and 211020210010.

It is not an unprimeable number, because it can be changed into a prime (211020210029) 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, 3286181 + ... + 3349779.

It is an arithmetic number, because the mean of its divisors is an integer number (9635018400).

Almost surely, 2^211020210020 is an apocalyptic number.

211020210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020210020 is an abundant number, since it is smaller than the sum of its proper divisors (251460673180).

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

211020210020 is a wasteful number, since it uses less digits than its factorization.

211020210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70844 (or 70842 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 211020210020 its reverse (20012020112), we get a palindrome (231032230132).

The spelling of 211020210020 in words is "two hundred eleven billion, twenty million, two hundred ten thousand, twenty".