22121232044 has 12 divisors (see below), whose sum is σ = 39178568184. Its totient is φ = 10927355424.

The previous prime is 22121232037. The next prime is 22121232071. The reversal of 22121232044 is 44023212122.

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 3 ways as a sum of consecutive naturals, for example, 33314777 + ... + 33315440.

It is an arithmetic number, because the mean of its divisors is an integer number (3264880682).

Almost surely, 2^22121232044 is an apocalyptic number.

It is an amenable number.

22121232044 is a deficient number, since it is larger than the sum of its proper divisors (17057336140).

22121232044 is a wasteful number, since it uses less digits than its factorization.

22121232044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66630304 (or 66630302 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 22121232044 its reverse (44023212122), we get a palindrome (66144444166).

The spelling of 22121232044 in words is "twenty-two billion, one hundred twenty-one million, two hundred thirty-two thousand, forty-four".