22212440340 has 48 divisors (see below), whose sum is σ = 63641231808. Its totient is φ = 5785565184.

The previous prime is 22212440287. The next prime is 22212440347. The reversal of 22212440340 is 4304421222.

It is a self number, because there is not a number n which added to its sum of digits gives 22212440340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212440347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4302157 + ... + 4307316.

It is an arithmetic number, because the mean of its divisors is an integer number (1325858996).

Almost surely, 2^22212440340 is an apocalyptic number.

22212440340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212440340 is an abundant number, since it is smaller than the sum of its proper divisors (41428791468).

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

22212440340 is a wasteful number, since it uses less digits than its factorization.

22212440340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8609528 (or 8609526 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 22212440340 its reverse (4304421222), we get a palindrome (26516861562).

The spelling of 22212440340 in words is "twenty-two billion, two hundred twelve million, four hundred forty thousand, three hundred forty".