22640342212 has 24 divisors (see below), whose sum is σ = 41966266104. Its totient is φ = 10650458112.

The previous prime is 22640342209. The next prime is 22640342227. The reversal of 22640342212 is 21224304622.

It can be written as a sum of positive squares in 4 ways, for example, as 15509215296 + 7131126916 = 124536^2 + 84446^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136008 + ... + 252544.

It is an arithmetic number, because the mean of its divisors is an integer number (1748594421).

Almost surely, 2^22640342212 is an apocalyptic number.

It is an amenable number.

22640342212 is a deficient number, since it is larger than the sum of its proper divisors (19325923892).

22640342212 is a wasteful number, since it uses less digits than its factorization.

22640342212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119415 (or 119413 counting only the distinct ones).

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

Adding to 22640342212 its reverse (21224304622), we get a palindrome (43864646834).

The spelling of 22640342212 in words is "twenty-two billion, six hundred forty million, three hundred forty-two thousand, two hundred twelve".