22201212221200 has 120 divisors (see below), whose sum is σ = 54296390522880. Its totient is φ = 8722165171200.

The previous prime is 22201212221191. The next prime is 22201212221233. The reversal of 22201212221200 is 212221210222.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4196412 + ... + 7874788.

It is an arithmetic number, because the mean of its divisors is an integer number (452469921024).

Almost surely, 2^{22201212221200} is an apocalyptic number.

22201212221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22201212221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27148195261440).

22201212221200 is an abundant number, since it is smaller than the sum of its proper divisors (32095178301680).

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

22201212221200 is a wasteful number, since it uses less digits than its factorization.

22201212221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678665 (or 3678654 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22201212221200 its reverse (212221210222), we get a palindrome (22413433431422).

The spelling of 22201212221200 in words is "twenty-two trillion, two hundred one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred".