11111272 has 16 divisors (see below), whose sum is σ = 21176100. Its totient is φ = 5464320.

The previous prime is 11111267. The next prime is 11111273. The reversal of 11111272 is 27211111.

It can be written as a sum of positive squares in 2 ways, for example, as 7214596 + 3896676 = 2686^2 + 1974^2 .

It is not an unprimeable number, because it can be changed into a prime (11111273) 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 3 ways as a sum of consecutive naturals, for example, 10897 + ... + 11872.

Almost surely, 2^11111272 is an apocalyptic number.

It is an amenable number.

11111272 is a deficient number, since it is larger than the sum of its proper divisors (10064828).

11111272 is a wasteful number, since it uses less digits than its factorization.

11111272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22836 (or 22832 counting only the distinct ones).

The product of its digits is 28, while the sum is 16.

The square root of 11111272 is about 3333.3574665793. The cubic root of 11111272 is about 223.1453937321.

Adding to 11111272 its reverse (27211111), we get a palindrome (38322383).

The spelling of 11111272 in words is "eleven million, one hundred eleven thousand, two hundred seventy-two".