1103200021 has 16 divisors (see below), whose sum is σ = 1447810560. Its totient is φ = 814391280.

The previous prime is 1103200019. The next prime is 1103200031. The reversal of 1103200021 is 1200023011.

It is a cyclic number.

It is not a de Polignac number, because 1103200021 - 2¹ = 1103200019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1103199980 and 1103200007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103200031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375571 + ... + 378496.

It is an arithmetic number, because the mean of its divisors is an integer number (90488160).

Almost surely, 2^1103200021 is an apocalyptic number.

1103200021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1103200021 is a deficient number, since it is larger than the sum of its proper divisors (344610539).

1103200021 is a wasteful number, since it uses less digits than its factorization.

1103200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754104.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1103200021 is about 33214.4550007975. The cubic root of 1103200021 is about 1033.2801518127.

Adding to 1103200021 its reverse (1200023011), we get a palindrome (2303223032).

The spelling of 1103200021 in words is "one billion, one hundred three million, two hundred thousand, twenty-one".