210011212020 has 96 divisors (see below), whose sum is σ = 602155749888. Its totient is φ = 54664215552.

The previous prime is 210011212007. The next prime is 210011212027. The reversal of 210011212020 is 20212110012.

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 = 210011211987 and 210011212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210011212027) 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, 952032 + ... + 1151688.

It is an arithmetic number, because the mean of its divisors is an integer number (6272455728).

Almost surely, 2^210011212020 is an apocalyptic number.

210011212020 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 210011212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301077874944).

210011212020 is an abundant number, since it is smaller than the sum of its proper divisors (392144537868).

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

210011212020 is a wasteful number, since it uses less digits than its factorization.

210011212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200089 (or 200087 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210011212020 its reverse (20212110012), we get a palindrome (230223322032).

The spelling of 210011212020 in words is "two hundred ten billion, eleven million, two hundred twelve thousand, twenty".