11122145 has 4 divisors (see below), whose sum is σ = 13346580. Its totient is φ = 8897712.

The previous prime is 11122141. The next prime is 11122171. The reversal of 11122145 is 54122111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1437601 + 9684544 = 1199^2 + 3112^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122145 - 2² = 11122141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11122141) 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 3 ways as a sum of consecutive naturals, for example, 1112210 + ... + 1112219.

It is an arithmetic number, because the mean of its divisors is an integer number (3336645).

Almost surely, 2^11122145 is an apocalyptic number.

It is an amenable number.

11122145 is a deficient number, since it is larger than the sum of its proper divisors (2224435).

11122145 is an equidigital number, since it uses as much as digits as its factorization.

11122145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224434.

The product of its digits is 80, while the sum is 17.

The square root of 11122145 is about 3334.9880059754. The cubic root of 11122145 is about 223.2181567451.

Adding to 11122145 its product of digits (80), we get a square (11122225 = 3335²).

Adding to 11122145 its reverse (54122111), we get a palindrome (65244256).

The spelling of 11122145 in words is "eleven million, one hundred twenty-two thousand, one hundred forty-five".