211000210020 has 72 divisors (see below), whose sum is σ = 677683037304. Its totient is φ = 52956914688.

The previous prime is 211000209991. The next prime is 211000210027. The reversal of 211000210020 is 20012000112.

211000210020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 31522582116 + 179477627904 = 177546^2 + 423648^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 211000209984 and 211000210011.

It is not an unprimeable number, because it can be changed into a prime (211000210027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34474099 + ... + 34480218.

It is an arithmetic number, because the mean of its divisors is an integer number (9412264407).

Almost surely, 2^211000210020 is an apocalyptic number.

211000210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211000210020 is an abundant number, since it is smaller than the sum of its proper divisors (466682827284).

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

211000210020 is a wasteful number, since it uses less digits than its factorization.

211000210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68954349 (or 68954344 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 211000210020 its reverse (20012000112), we get a palindrome (231012210132).

The spelling of 211000210020 in words is "two hundred eleven billion, two hundred ten thousand, twenty".