22123031112 has 288 divisors, whose sum is σ = 74705816640. Its totient is φ = 5759424000.

The previous prime is 22123031059. The next prime is 22123031129. The reversal of 22123031112 is 21113032122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 66836787 + ... + 66837117.

Almost surely, 2^22123031112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22123031112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37352908320).

22123031112 is an abundant number, since it is smaller than the sum of its proper divisors (52582785528).

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

22123031112 is a wasteful number, since it uses less digits than its factorization.

22123031112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22123031112 its reverse (21113032122), we get a palindrome (43236063234).

The spelling of 22123031112 in words is "twenty-two billion, one hundred twenty-three million, thirty-one thousand, one hundred twelve".