22121061224 has 16 divisors (see below), whose sum is σ = 41512427520. Its totient is φ = 11051080560.

The previous prime is 22121061217. The next prime is 22121061227. The reversal of 22121061224 is 42216012122.

It is a self number, because there is not a number n which added to its sum of digits gives 22121061224.

It is not an unprimeable number, because it can be changed into a prime (22121061227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1171304 + ... + 1190039.

It is an arithmetic number, because the mean of its divisors is an integer number (2594526720).

Almost surely, 2^22121061224 is an apocalyptic number.

It is an amenable number.

22121061224 is a deficient number, since it is larger than the sum of its proper divisors (19391366296).

22121061224 is a wasteful number, since it uses less digits than its factorization.

22121061224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362520 (or 2362516 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 22121061224 its reverse (42216012122), we get a palindrome (64337073346).

The spelling of 22121061224 in words is "twenty-two billion, one hundred twenty-one million, sixty-one thousand, two hundred twenty-four".