11211471 has 6 divisors (see below), whose sum is σ = 16194360. Its totient is φ = 7474308.

The previous prime is 11211469. The next prime is 11211479. The reversal of 11211471 is 17411211.

It is not a de Polignac number, because 11211471 - 2¹ = 11211469 is a prime.

It is a super-3 number, since 3×11211471³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622851 + ... + 622868.

It is an arithmetic number, because the mean of its divisors is an integer number (2699060).

Almost surely, 2^11211471 is an apocalyptic number.

11211471 is a deficient number, since it is larger than the sum of its proper divisors (4982889).

11211471 is a wasteful number, since it uses less digits than its factorization.

11211471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245725 (or 1245722 counting only the distinct ones).

The product of its digits is 56, while the sum is 18.

The square root of 11211471 is about 3348.3534759640. The cubic root of 11211471 is about 223.8141461684.

Adding to 11211471 its reverse (17411211), we get a palindrome (28622682).

The spelling of 11211471 in words is "eleven million, two hundred eleven thousand, four hundred seventy-one".