212220211110 has 192 divisors, whose sum is σ = 556545475584. Its totient is φ = 51748761600.

The previous prime is 212220211103. The next prime is 212220211117. The reversal of 212220211110 is 11112022212.

It is an interprime number because it is at equal distance from previous prime (212220211103) and next prime (212220211117).

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 212220211110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220211117) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 96331269 + ... + 96333471.

It is an arithmetic number, because the mean of its divisors is an integer number (2898674352).

Almost surely, 2^212220211110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212220211110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278272737792).

212220211110 is an abundant number, since it is smaller than the sum of its proper divisors (344325264474).

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

212220211110 is a wasteful number, since it uses less digits than its factorization.

212220211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559 (or 2542 counting only the distinct ones).

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

Adding to 212220211110 its reverse (11112022212), we get a palindrome (223332233322).

It can be divided in two parts, 2122202 and 11110, that added together give a palindrome (2133312).

The spelling of 212220211110 in words is "two hundred twelve billion, two hundred twenty million, two hundred eleven thousand, one hundred ten".