11211340 has 48 divisors (see below), whose sum is σ = 27300672. Its totient is φ = 3787776.

The previous prime is 11211331. The next prime is 11211341. The reversal of 11211340 is 4311211.

It is a self number, because there is not a number n which added to its sum of digits gives 11211340.

It is not an unprimeable number, because it can be changed into a prime (11211341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9672 + ... + 10768.

It is an arithmetic number, because the mean of its divisors is an integer number (568764).

Almost surely, 2^11211340 is an apocalyptic number.

11211340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11211340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13650336).

11211340 is an abundant number, since it is smaller than the sum of its proper divisors (16089332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211340 is a wasteful number, since it uses less digits than its factorization.

11211340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1184 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 11211340 is about 3348.3339140534. Note that the first 3 decimals coincide. The cubic root of 11211340 is about 223.8132744491.

Adding to 11211340 its reverse (4311211), we get a palindrome (15522551).

The spelling of 11211340 in words is "eleven million, two hundred eleven thousand, three hundred forty".