1101100020 has 192 divisors, whose sum is σ = 3305788416. Its totient is φ = 273438720.

The previous prime is 1101100019. The next prime is 1101100031. The reversal of 1101100020 is 200011011.

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 a junction number, because it is equal to n+sod(n) for n = 1101099981 and 1101100008.

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, 6364654 + ... + 6364826.

It is an arithmetic number, because the mean of its divisors is an integer number (17217648).

Almost surely, 2^1101100020 is an apocalyptic number.

1101100020 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 1101100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652894208).

1101100020 is an abundant number, since it is smaller than the sum of its proper divisors (2204688396).

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

1101100020 is a wasteful number, since it uses less digits than its factorization.

1101100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 328 counting only the distinct ones).

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

The square root of 1101100020 is about 33182.8271851571. The cubic root of 1101100020 is about 1032.6241004461.

Adding to 1101100020 its reverse (200011011), we get a palindrome (1301111031).

The spelling of 1101100020 in words is "one billion, one hundred one million, one hundred thousand, twenty".