1101225 has 12 divisors (see below), whose sum is σ = 1820816. Its totient is φ = 587280.

The previous prime is 1101211. The next prime is 1101229. The reversal of 1101225 is 5221011.

It is not a de Polignac number, because 1101225 - 2⁵ = 1101193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101225.

It is not an unprimeable number, because it can be changed into a prime (1101229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7267 + ... + 7416.

2^1101225 is an apocalyptic number.

1101225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1101225 is a deficient number, since it is larger than the sum of its proper divisors (719591).

1101225 is a wasteful number, since it uses less digits than its factorization.

1101225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14696 (or 14691 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1101225 is about 1049.3926815068. The cubic root of 1101225 is about 103.2663168189.

Adding to 1101225 its reverse (5221011), we get a palindrome (6322236).

It can be divided in two parts, 1101 and 225, that added together give a triangular number (1326 = T₅₁).

The spelling of 1101225 in words is "one million, one hundred one thousand, two hundred twenty-five".