1100221022020 has 72 divisors (see below), whose sum is σ = 2463248188800. Its totient is φ = 411647431104.

The previous prime is 1100221021981. The next prime is 1100221022107. The reversal of 1100221022020 is 202201220011.

It is a happy number.

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, 2139621 + ... + 2603539.

It is an arithmetic number, because the mean of its divisors is an integer number (34211780400).

Almost surely, 2^{1100221022020} is an apocalyptic number.

1100221022020 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 1100221022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231624094400).

1100221022020 is an abundant number, since it is smaller than the sum of its proper divisors (1363027166780).

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

1100221022020 is a wasteful number, since it uses less digits than its factorization.

1100221022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464105 (or 464024 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1100221022020 its reverse (202201220011), we get a palindrome (1302422242031).

The spelling of 1100221022020 in words is "one trillion, one hundred billion, two hundred twenty-one million, twenty-two thousand, twenty".