1100211120120 has 128 divisors (see below), whose sum is σ = 3776180889600. Its totient is φ = 251208262656.

The previous prime is 1100211120103. The next prime is 1100211120121. The reversal of 1100211120120 is 210211120011.

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

It is a junction number, because it is equal to n+sod(n) for n = 1100211120096 and 1100211120105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100211120121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88161 + ... + 1485999.

It is an arithmetic number, because the mean of its divisors is an integer number (29501413200).

Almost surely, 2^{1100211120120} is an apocalyptic number.

1100211120120 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 1100211120120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1888090444800).

1100211120120 is an abundant number, since it is smaller than the sum of its proper divisors (2675969769480).

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

1100211120120 is a wasteful number, since it uses less digits than its factorization.

1100211120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398797 (or 1398793 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1100211120120 its reverse (210211120011), we get a palindrome (1310422240131).

The spelling of 1100211120120 in words is "one trillion, one hundred billion, two hundred eleven million, one hundred twenty thousand, one hundred twenty".