1100120100 has 72 divisors (see below), whose sum is σ = 3218856480. Its totient is φ = 290062080.

The previous prime is 1100120093. The next prime is 1100120113. The reversal of 1100120100 is 10210011.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 6099 + ... + 47301.

It is an arithmetic number, because the mean of its divisors is an integer number (44706340).

Almost surely, 2^1100120100 is an apocalyptic number.

1100120100 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 1100120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609428240).

1100120100 is an abundant number, since it is smaller than the sum of its proper divisors (2118736380).

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

1100120100 is a wasteful number, since it uses less digits than its factorization.

1100120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41309 (or 41302 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1100120100 is about 33168.0584297604. The cubic root of 1100120100 is about 1032.3176828291.

Adding to 1100120100 its reverse (10210011), we get a palindrome (1110330111).

The spelling of 1100120100 in words is "one billion, one hundred million, one hundred twenty thousand, one hundred".