22011222201100 has 144 divisors (see below), whose sum is σ = 52846992076032. Its totient is φ = 7890372000000.

The previous prime is 22011222201077. The next prime is 22011222201109. The reversal of 22011222201100 is 110222211022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22011222201109) 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, 998185075 + ... + 998207125.

It is an arithmetic number, because the mean of its divisors is an integer number (366993000528).

Almost surely, 2^{22011222201100} is an apocalyptic number.

22011222201100 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 22011222201100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26423496038016).

22011222201100 is an abundant number, since it is smaller than the sum of its proper divisors (30835769874932).

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

22011222201100 is a wasteful number, since it uses less digits than its factorization.

22011222201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34928 (or 34921 counting only the distinct ones).

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

Adding to 22011222201100 its reverse (110222211022), we get a palindrome (22121444412122).

The spelling of 22011222201100 in words is "twenty-two trillion, eleven billion, two hundred twenty-two million, two hundred one thousand, one hundred".