22201122112 has 56 divisors (see below), whose sum is σ = 47613566952. Its totient is φ = 10210099200.

The previous prime is 22201122107. The next prime is 22201122121. The reversal of 22201122112 is 21122110222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5802782976 + 16398339136 = 76176^2 + 128056^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186312 + ... + 281272.

It is an arithmetic number, because the mean of its divisors is an integer number (850242267).

Almost surely, 2^22201122112 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 22201122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23806783476).

22201122112 is an abundant number, since it is smaller than the sum of its proper divisors (25412444840).

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

22201122112 is a wasteful number, since it uses less digits than its factorization.

22201122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95267 (or 95257 counting only the distinct ones).

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

Adding to 22201122112 its reverse (21122110222), we get a palindrome (43323232334).

The spelling of 22201122112 in words is "twenty-two billion, two hundred one million, one hundred twenty-two thousand, one hundred twelve".