22011224128 has 56 divisors (see below), whose sum is σ = 45256216320. Its totient is φ = 10610741760.

The previous prime is 22011224117. The next prime is 22011224129. The reversal of 22011224128 is 82142211022.

It is a happy number.

It is a super-2 number, since 2×22011224128² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22011224129) 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, 513075 + ... + 554317.

It is an arithmetic number, because the mean of its divisors is an integer number (808146720).

Almost surely, 2^22011224128 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 22011224128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22628108160).

22011224128 is an abundant number, since it is smaller than the sum of its proper divisors (23244992192).

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

22011224128 is a wasteful number, since it uses less digits than its factorization.

22011224128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41555 (or 41545 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The spelling of 22011224128 in words is "twenty-two billion, eleven million, two hundred twenty-four thousand, one hundred twenty-eight".