212212034340 has 48 divisors (see below), whose sum is σ = 594339345600. Its totient is φ = 56576004480.

The previous prime is 212212034329. The next prime is 212212034371. The reversal of 212212034340 is 43430212212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212212034340.

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, 185491 + ... + 677370.

It is an arithmetic number, because the mean of its divisors is an integer number (12382069700).

Almost surely, 2^212212034340 is an apocalyptic number.

212212034340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212034340 is an abundant number, since it is smaller than the sum of its proper divisors (382127311260).

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

212212034340 is a wasteful number, since it uses less digits than its factorization.

212212034340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866972 (or 866970 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 212212034340 its reverse (43430212212), we get a palindrome (255642246552).

The spelling of 212212034340 in words is "two hundred twelve billion, two hundred twelve million, thirty-four thousand, three hundred forty".