1113043221 has 16 divisors (see below), whose sum is σ = 1649606400. Its totient is φ = 741734784.

The previous prime is 1113043219. The next prime is 1113043247. The reversal of 1113043221 is 1223403111.

It is not a de Polignac number, because 1113043221 - 2¹ = 1113043219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113043194 and 1113043203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113043291) 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, 77605 + ... + 90821.

It is an arithmetic number, because the mean of its divisors is an integer number (103100400).

Almost surely, 2^1113043221 is an apocalyptic number.

It is an amenable number.

1113043221 is a deficient number, since it is larger than the sum of its proper divisors (536563179).

1113043221 is a wasteful number, since it uses less digits than its factorization.

1113043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16345 (or 16339 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1113043221 is about 33362.3023935699. The cubic root of 1113043221 is about 1036.3441724688.

Adding to 1113043221 its reverse (1223403111), we get a palindrome (2336446332).

The spelling of 1113043221 in words is "one billion, one hundred thirteen million, forty-three thousand, two hundred twenty-one".