11013021 has 24 divisors (see below), whose sum is σ = 16825536. Its totient is φ = 6927360.

The previous prime is 11013017. The next prime is 11013047. The reversal of 11013021 is 12031011.

It is not a de Polignac number, because 11013021 - 2² = 11013017 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 = 11012994 and 11013012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16861 + ... + 17501.

It is an arithmetic number, because the mean of its divisors is an integer number (701064).

Almost surely, 2^11013021 is an apocalyptic number.

It is an amenable number.

11013021 is a deficient number, since it is larger than the sum of its proper divisors (5812515).

11013021 is a wasteful number, since it uses less digits than its factorization.

11013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753 (or 750 counting only the distinct ones).

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

The square root of 11013021 is about 3318.5871993968. The cubic root of 11013021 is about 222.4857273174.

Adding to 11013021 its reverse (12031011), we get a palindrome (23044032).

It can be divided in two parts, 110 and 13021, that added together give a palindrome (13131).

The spelling of 11013021 in words is "eleven million, thirteen thousand, twenty-one".