1103200020 has 192 divisors, whose sum is σ = 3824352000. Its totient is φ = 262144512.

The previous prime is 1103200019. The next prime is 1103200031. The reversal of 1103200020 is 200023011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1103199975 and 1103200011.

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, 200871 + ... + 206289.

It is an arithmetic number, because the mean of its divisors is an integer number (19918500).

Almost surely, 2^1103200020 is an apocalyptic number.

1103200020 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 1103200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1912176000).

1103200020 is an abundant number, since it is smaller than the sum of its proper divisors (2721151980).

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

1103200020 is a wasteful number, since it uses less digits than its factorization.

1103200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479 (or 5471 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1103200020 is about 33214.4549857438. The cubic root of 1103200020 is about 1033.2801515005.

Adding to 1103200020 its reverse (200023011), we get a palindrome (1303223031).

The spelling of 1103200020 in words is "one billion, one hundred three million, two hundred thousand, twenty".