1103211009 has 14 divisors (see below), whose sum is σ = 1654060946. Its totient is φ = 735473520.

The previous prime is 1103211001. The next prime is 1103211019. The reversal of 1103211009 is 9001123011.

It can be written as a sum of positive squares in only one way, i.e., 850305600 + 252905409 = 29160^2 + 15903^2 .

It is not a de Polignac number, because 1103211009 - 2³ = 1103211001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103210982 and 1103211000.

It is not an unprimeable number, because it can be changed into a prime (1103211001) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 755932 + ... + 757389.

Almost surely, 2^1103211009 is an apocalyptic number.

It is an amenable number.

1103211009 is a deficient number, since it is larger than the sum of its proper divisors (550849937).

1103211009 is an frugal number, since it uses more digits than its factorization.

1103211009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513339 (or 1513324 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 1103211009 is about 33214.6204102952. The cubic root of 1103211009 is about 1033.2835823313.

The spelling of 1103211009 in words is "one billion, one hundred three million, two hundred eleven thousand, nine".