212102110020 has 48 divisors (see below), whose sum is σ = 609936884928. Its totient is φ = 55031898240.

The previous prime is 212102110001. The next prime is 212102110097. The reversal of 212102110020 is 20011201212.

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 = 212102109978 and 212102110005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47768526 + ... + 47772965.

It is an arithmetic number, because the mean of its divisors is an integer number (12707018436).

Almost surely, 2^212102110020 is an apocalyptic number.

212102110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212102110020 is an abundant number, since it is smaller than the sum of its proper divisors (397834774908).

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

212102110020 is a wasteful number, since it uses less digits than its factorization.

212102110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95541540 (or 95541538 counting only the distinct ones).

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

Adding to 212102110020 its reverse (20011201212), we get a palindrome (232113311232).

The spelling of 212102110020 in words is "two hundred twelve billion, one hundred two million, one hundred ten thousand, twenty".