212201110220 has 96 divisors (see below), whose sum is σ = 498802461696. Its totient is φ = 75162931200.

The previous prime is 212201110171. The next prime is 212201110223. The reversal of 212201110220 is 22011102212.

It is a super-2 number, since 2×212201110220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212201110195 and 212201110204.

It is not an unprimeable number, because it can be changed into a prime (212201110223) 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, 3441260 + ... + 3502380.

It is an arithmetic number, because the mean of its divisors is an integer number (5195858976).

Almost surely, 2^212201110220 is an apocalyptic number.

212201110220 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 212201110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249401230848).

212201110220 is an abundant number, since it is smaller than the sum of its proper divisors (286601351476).

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

212201110220 is a wasteful number, since it uses less digits than its factorization.

212201110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61551 (or 61549 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212201110220 its reverse (22011102212), we get a palindrome (234212212432).

The spelling of 212201110220 in words is "two hundred twelve billion, two hundred one million, one hundred ten thousand, two hundred twenty".