22201100012 has 144 divisors (see below), whose sum is σ = 50970850560. Its totient is φ = 8237614464.

The previous prime is 22201099951. The next prime is 22201100021. The reversal of 22201100012 is 21000110222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22201099966 and 22201100002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14059439 + ... + 14061017.

It is an arithmetic number, because the mean of its divisors is an integer number (353964240).

Almost surely, 2^22201100012 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 22201100012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25485425280).

22201100012 is an abundant number, since it is smaller than the sum of its proper divisors (28769750548).

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

22201100012 is a wasteful number, since it uses less digits than its factorization.

22201100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748 (or 1727 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22201100012 its reverse (21000110222), we get a palindrome (43201210234).

The spelling of 22201100012 in words is "twenty-two billion, two hundred one million, one hundred thousand, twelve".