22201100120100 has 144 divisors (see below), whose sum is σ = 70094571535296. Its totient is φ = 5380562112000.

The previous prime is 22201100120047. The next prime is 22201100120107. The reversal of 22201100120100 is 102100110222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (22201100120107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10735342 + ... + 12635258.

It is an arithmetic number, because the mean of its divisors is an integer number (486767857884).

Almost surely, 2^{22201100120100} is an apocalyptic number.

22201100120100 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 22201100120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35047285767648).

22201100120100 is an abundant number, since it is smaller than the sum of its proper divisors (47893471415196).

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

22201100120100 is a wasteful number, since it uses less digits than its factorization.

22201100120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903486 (or 1903479 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22201100120100 its reverse (102100110222), we get a palindrome (22303200230322).

The spelling of 22201100120100 in words is "twenty-two trillion, two hundred one billion, one hundred million, one hundred twenty thousand, one hundred".