22121040112 has 10 divisors (see below), whose sum is σ = 42859515248. Its totient is φ = 11060520048.

The previous prime is 22121040077. The next prime is 22121040143. The reversal of 22121040112 is 21104012122.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 1382565007 = 22121040112 / (2 + 2 + 1 + 2 + 1 + 0 + 4 + 0 + 1 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691282488 + ... + 691282519.

Almost surely, 2^22121040112 is an apocalyptic number.

It is an amenable number.

22121040112 is a deficient number, since it is larger than the sum of its proper divisors (20738475136).

22121040112 is a wasteful number, since it uses less digits than its factorization.

22121040112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382565015 (or 1382565009 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22121040112 its reverse (21104012122), we get a palindrome (43225052234).

The spelling of 22121040112 in words is "twenty-two billion, one hundred twenty-one million, forty thousand, one hundred twelve".