212011102010220 has 96 divisors (see below), whose sum is σ = 609794441876928. Its totient is φ = 54997524467712.

The previous prime is 212011102010219. The next prime is 212011102010293. The reversal of 212011102010220 is 22010201110212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212011102010220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2011872 + ... + 20689848.

It is an arithmetic number, because the mean of its divisors is an integer number (6352025436218).

Almost surely, 2^{212011102010220} is an apocalyptic number.

212011102010220 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 212011102010220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304897220938464).

212011102010220 is an abundant number, since it is smaller than the sum of its proper divisors (397783339866708).

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

212011102010220 is a wasteful number, since it uses less digits than its factorization.

212011102010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18683139 (or 18683137 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212011102010220 its reverse (22010201110212), we get a palindrome (234021303120432).

The spelling of 212011102010220 in words is "two hundred twelve trillion, eleven billion, one hundred two million, ten thousand, two hundred twenty".