11012211 has 18 divisors (see below), whose sum is σ = 18504252. Its totient is φ = 6292440.

The previous prime is 11012207. The next prime is 11012213. The reversal of 11012211 is 11221011.

It is a happy number.

It is not a de Polignac number, because 11012211 - 2² = 11012207 is a prime.

It is a super-2 number, since 2×11012211² = 242537582217042, which contains 22 as substring.

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 = 11012193 and 11012202.

It is not an unprimeable number, because it can be changed into a prime (11012213) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12045 + ... + 12926.

It is an arithmetic number, because the mean of its divisors is an integer number (1028014).

Almost surely, 2^11012211 is an apocalyptic number.

11012211 is a deficient number, since it is larger than the sum of its proper divisors (7492041).

11012211 is a wasteful number, since it uses less digits than its factorization.

11012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24991 (or 24981 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 11012211 is about 3318.4651572677. The cubic root of 11012211 is about 222.4802726271.

Adding to 11012211 its reverse (11221011), we get a palindrome (22233222).

It can be divided in two parts, 110 and 12211, that added together give a palindrome (12321).

The spelling of 11012211 in words is "eleven million, twelve thousand, two hundred eleven".