22121001112 has 16 divisors (see below), whose sum is σ = 47402145360. Its totient is φ = 9480429024.

The previous prime is 22121001107. The next prime is 22121001139. The reversal of 22121001112 is 21110012122.

It is a junction number, because it is equal to n+sod(n) for n = 22121001092 and 22121001101.

It is a congruent 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, 197508883 + ... + 197508994.

It is an arithmetic number, because the mean of its divisors is an integer number (2962634085).

Almost surely, 2^22121001112 is an apocalyptic number.

It is an amenable number.

22121001112 is an abundant number, since it is smaller than the sum of its proper divisors (25281144248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22121001112 is a wasteful number, since it uses less digits than its factorization.

22121001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395017890 (or 395017886 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22121001112 its reverse (21110012122), we get a palindrome (43231013234).

The spelling of 22121001112 in words is "twenty-two billion, one hundred twenty-one million, one thousand, one hundred twelve".