22272440612 has 24 divisors (see below), whose sum is σ = 39498950400. Its totient is φ = 10987232256.

The previous prime is 22272440599. The next prime is 22272440621. The reversal of 22272440612 is 21604427222.

It is a super-2 number, since 2×22272440612² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 420233 + ... + 470255.

It is an arithmetic number, because the mean of its divisors is an integer number (1645789600).

Almost surely, 2^22272440612 is an apocalyptic number.

It is an amenable number.

22272440612 is a deficient number, since it is larger than the sum of its proper divisors (17226509788).

22272440612 is a wasteful number, since it uses less digits than its factorization.

22272440612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51515 (or 51513 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

Adding to 22272440612 its reverse (21604427222), we get a palindrome (43876867834).

The spelling of 22272440612 in words is "twenty-two billion, two hundred seventy-two million, four hundred forty thousand, six hundred twelve".