11021331 has 4 divisors (see below), whose sum is σ = 14695112. Its totient is φ = 7347552.

The previous prime is 11021327. The next prime is 11021357. The reversal of 11021331 is 13312011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13312011 = 3 ⋅4437337.

It is not a de Polignac number, because 11021331 - 2² = 11021327 is a prime.

It is a super-2 number, since 2×11021331² = 242939474023122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836886 + ... + 1836891.

It is an arithmetic number, because the mean of its divisors is an integer number (3673778).

Almost surely, 2^11021331 is an apocalyptic number.

11021331 is a deficient number, since it is larger than the sum of its proper divisors (3673781).

11021331 is an equidigital number, since it uses as much as digits as its factorization.

11021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673780.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 11021331 is about 3319.8390021204. The cubic root of 11021331 is about 222.5416729586.

Adding to 11021331 its reverse (13312011), we get a palindrome (24333342).

The spelling of 11021331 in words is "eleven million, twenty-one thousand, three hundred thirty-one".