1113021 has 40 divisors (see below), whose sum is σ = 2059904. Its totient is φ = 583200.

The previous prime is 1113019. The next prime is 1113029. The reversal of 1113021 is 1203111.

It is not a de Polignac number, because 1113021 - 2¹ = 1113019 is a prime.

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 = 1112994 and 1113012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113029) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7296 + ... + 7446.

2^1113021 is an apocalyptic number.

It is an amenable number.

1113021 is a deficient number, since it is larger than the sum of its proper divisors (946883).

1113021 is a wasteful number, since it uses less digits than its factorization.

1113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1113021 is about 1054.9981042637. The cubic root of 1113021 is about 103.6337275834.

Adding to 1113021 its reverse (1203111), we get a palindrome (2316132).

The spelling of 1113021 in words is "one million, one hundred thirteen thousand, twenty-one".