11021013 has 12 divisors (see below), whose sum is σ = 15968940. Its totient is φ = 7324416.

The previous prime is 11021011. The next prime is 11021033. The reversal of 11021013 is 31012011.

It can be written as a sum of positive squares in 2 ways, for example, as 1912689 + 9108324 = 1383^2 + 3018^2 .

It is not a de Polignac number, because 11021013 - 2¹ = 11021011 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 = 11020986 and 11021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021011) 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 11 ways as a sum of consecutive naturals, for example, 1443 + ... + 4911.

It is an arithmetic number, because the mean of its divisors is an integer number (1330745).

Almost surely, 2^11021013 is an apocalyptic number.

It is an amenable number.

11021013 is a deficient number, since it is larger than the sum of its proper divisors (4947927).

11021013 is a wasteful number, since it uses less digits than its factorization.

11021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828 (or 3825 counting only the distinct ones).

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

The square root of 11021013 is about 3319.7911078862. The cubic root of 11021013 is about 222.5395325961.

Adding to 11021013 its reverse (31012011), we get a palindrome (42033024).

The spelling of 11021013 in words is "eleven million, twenty-one thousand, thirteen".