212110010020 has 12 divisors (see below), whose sum is σ = 445431021084. Its totient is φ = 84844004000.

The previous prime is 212110009999. The next prime is 212110010029. The reversal of 212110010020 is 20010011212.

212110010020 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 2 ways, for example, as 76426814116 + 135683195904 = 276454^2 + 368352^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 212110009979 and 212110010006.

It is not an unprimeable number, because it can be changed into a prime (212110010029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5302750231 + ... + 5302750270.

It is an arithmetic number, because the mean of its divisors is an integer number (37119251757).

Almost surely, 2^212110010020 is an apocalyptic number.

212110010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212110010020 is an abundant number, since it is smaller than the sum of its proper divisors (233321011064).

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

212110010020 is a wasteful number, since it uses less digits than its factorization.

212110010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10605500510 (or 10605500508 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 212110010020 its reverse (20010011212), we get a palindrome (232120021232).

The spelling of 212110010020 in words is "two hundred twelve billion, one hundred ten million, ten thousand, twenty".