1220116 has 6 divisors (see below), whose sum is σ = 2135210. Its totient is φ = 610056.

The previous prime is 1220099. The next prime is 1220147. The reversal of 1220116 is 6110221.

It can be written as a sum of positive squares in only one way, i.e., 864900 + 355216 = 930^2 + 596^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220096 and 1220105.

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, 152511 + ... + 152518.

2^1220116 is an apocalyptic number.

It is an amenable number.

1220116 is a deficient number, since it is larger than the sum of its proper divisors (915094).

1220116 is a wasteful number, since it uses less digits than its factorization.

1220116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305033 (or 305031 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1220116 is about 1104.5886112033. The cubic root of 1220116 is about 106.8563595045.

Adding to 1220116 its reverse (6110221), we get a palindrome (7330337).

The spelling of 1220116 in words is "one million, two hundred twenty thousand, one hundred sixteen".