22120021001100 has 288 divisors, whose sum is σ = 70980031987200. Its totient is φ = 5273284608000.

The previous prime is 22120021001093. The next prime is 22120021001131. The reversal of 22120021001100 is 110012002122.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1086808524 + ... + 1086828876.

It is an arithmetic number, because the mean of its divisors is an integer number (246458444400).

Almost surely, 2^{22120021001100} is an apocalyptic number.

22120021001100 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 22120021001100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35490015993600).

22120021001100 is an abundant number, since it is smaller than the sum of its proper divisors (48860010986100).

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

22120021001100 is a wasteful number, since it uses less digits than its factorization.

22120021001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25841 (or 25834 counting only the distinct ones).

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

Adding to 22120021001100 its reverse (110012002122), we get a palindrome (22230033003222).

The spelling of 22120021001100 in words is "twenty-two trillion, one hundred twenty billion, twenty-one million, one thousand, one hundred".