1121216 has 14 divisors (see below), whose sum is σ = 2225040. Its totient is φ = 560576.

The previous prime is 1121203. The next prime is 1121221. The reversal of 1121216 is 6121211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8696 + ... + 8823.

2^1121216 is an apocalyptic number.

1121216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1121216 is a deficient number, since it is larger than the sum of its proper divisors (1103824).

1121216 is an equidigital number, since it uses as much as digits as its factorization.

1121216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17531 (or 17521 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 1121216 is about 1058.8748745721. The cubic root of 1121216 is about 103.8874522103.

Adding to 1121216 its reverse (6121211), we get a palindrome (7242427).

The spelling of 1121216 in words is "one million, one hundred twenty-one thousand, two hundred sixteen".