22121111044 has 12 divisors (see below), whose sum is σ = 38716167168. Its totient is φ = 11059349000.

The previous prime is 22121111029. The next prime is 22121111053. The reversal of 22121111044 is 44011112122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259732 + ... + 334219.

It is an arithmetic number, because the mean of its divisors is an integer number (3226347264).

Almost surely, 2^22121111044 is an apocalyptic number.

It is an amenable number.

22121111044 is a deficient number, since it is larger than the sum of its proper divisors (16595056124).

22121111044 is a wasteful number, since it uses less digits than its factorization.

22121111044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603266 (or 603264 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22121111044 its reverse (44011112122), we get a palindrome (66132223166).

The spelling of 22121111044 in words is "twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, forty-four".