212211224340 has 48 divisors (see below), whose sum is σ = 594226731840. Its totient is φ = 56586297600.

The previous prime is 212211224321. The next prime is 212211224359. The reversal of 212211224340 is 43422112212.

212211224340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212211224321) and next prime (212211224359).

It is a self number, because there is not a number n which added to its sum of digits gives 212211224340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011216 + ... + 1202904.

It is an arithmetic number, because the mean of its divisors is an integer number (12379723580).

Almost surely, 2^212211224340 is an apocalyptic number.

212211224340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212211224340 is an abundant number, since it is smaller than the sum of its proper divisors (382015507500).

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

212211224340 is a wasteful number, since it uses less digits than its factorization.

212211224340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210152 (or 210150 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 212211224340 its reverse (43422112212), we get a palindrome (255633336552).

The spelling of 212211224340 in words is "two hundred twelve billion, two hundred eleven million, two hundred twenty-four thousand, three hundred forty".