212224341340 has 96 divisors (see below), whose sum is σ = 491374211328. Its totient is φ = 76352640000.

The previous prime is 212224341337. The next prime is 212224341349. The reversal of 212224341340 is 43143422212.

It is a junction number, because it is equal to n+sod(n) for n = 212224341299 and 212224341308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212224341349) 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, 9701415 + ... + 9723265.

It is an arithmetic number, because the mean of its divisors is an integer number (5118481368).

Almost surely, 2^212224341340 is an apocalyptic number.

212224341340 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 212224341340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245687105664).

212224341340 is an abundant number, since it is smaller than the sum of its proper divisors (279149869988).

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

212224341340 is a wasteful number, since it uses less digits than its factorization.

212224341340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22339 (or 22337 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 212224341340 its reverse (43143422212), we get a palindrome (255367763552).

The spelling of 212224341340 in words is "two hundred twelve billion, two hundred twenty-four million, three hundred forty-one thousand, three hundred forty".