1101216 has 24 divisors (see below), whose sum is σ = 2890944. Its totient is φ = 367040.

The previous prime is 1101211. The next prime is 1101229. The reversal of 1101216 is 6121011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1101211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5640 + ... + 5831.

It is an arithmetic number, because the mean of its divisors is an integer number (120456).

2^1101216 is an apocalyptic number.

1101216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1101216 is an abundant number, since it is smaller than the sum of its proper divisors (1789728).

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

1101216 is a wasteful number, since it uses less digits than its factorization.

1101216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11484 (or 11476 counting only the distinct ones).

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

The square root of 1101216 is about 1049.3883933035. The cubic root of 1101216 is about 103.2660354960.

Adding to 1101216 its reverse (6121011), we get a palindrome (7222227).

It can be divided in two parts, 110 and 1216, that added together give a triangular number (1326 = T₅₁).

The spelling of 1101216 in words is "one million, one hundred one thousand, two hundred sixteen".