1100221212020 has 192 divisors, whose sum is σ = 2825432064000. Its totient is φ = 351507340800.

The previous prime is 1100221212019. The next prime is 1100221212031. The reversal of 1100221212020 is 202121220011.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1100221211986 and 1100221212004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40809545 + ... + 40836495.

It is an arithmetic number, because the mean of its divisors is an integer number (14715792000).

Almost surely, 2^{1100221212020} is an apocalyptic number.

1100221212020 is a gapful number since it is divisible by the number (10) 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 1100221212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412716032000).

1100221212020 is an abundant number, since it is smaller than the sum of its proper divisors (1725210851980).

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

1100221212020 is a wasteful number, since it uses less digits than its factorization.

1100221212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27238 (or 27236 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1100221212020 its reverse (202121220011), we get a palindrome (1302342432031).

The spelling of 1100221212020 in words is "one trillion, one hundred billion, two hundred twenty-one million, two hundred twelve thousand, twenty".