22120121112 has 32 divisors (see below), whose sum is σ = 55531699200. Its totient is φ = 7342520864.

The previous prime is 22120121057. The next prime is 22120121117. The reversal of 22120121112 is 21112102122.

It is a junction number, because it is equal to n+sod(n) for n = 22120121091 and 22120121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120121117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1922448 + ... + 1933919.

It is an arithmetic number, because the mean of its divisors is an integer number (1735365600).

Almost surely, 2^22120121112 is an apocalyptic number.

It is an amenable number.

22120121112 is an abundant number, since it is smaller than the sum of its proper divisors (33411578088).

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

22120121112 is a wasteful number, since it uses less digits than its factorization.

22120121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856615 (or 3856611 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22120121112 its reverse (21112102122), we get a palindrome (43232223234).

The spelling of 22120121112 in words is "twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, one hundred twelve".