211210003020 has 96 divisors (see below), whose sum is σ = 608757811200. Its totient is φ = 54675350784.

The previous prime is 211210003013. The next prime is 211210003021. The reversal of 211210003020 is 20300012112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 211210002987 and 211210003005.

It is not an unprimeable number, because it can be changed into a prime (211210003021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 866221 + ... + 1082939.

It is an arithmetic number, because the mean of its divisors is an integer number (6341227200).

Almost surely, 2^211210003020 is an apocalyptic number.

211210003020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211210003020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304378905600).

211210003020 is an abundant number, since it is smaller than the sum of its proper divisors (397547808180).

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

211210003020 is a wasteful number, since it uses less digits than its factorization.

211210003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217207 (or 217205 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 211210003020 its reverse (20300012112), we get a palindrome (231510015132).

The spelling of 211210003020 in words is "two hundred eleven billion, two hundred ten million, three thousand, twenty".