1021116 has 12 divisors (see below), whose sum is σ = 2382632. Its totient is φ = 340368.

The previous prime is 1021093. The next prime is 1021123. The reversal of 1021116 is 6111201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 85093 = 1021116 / (1 + 0 + 2 + 1 + 1 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42535 + ... + 42558.

2^1021116 is an apocalyptic number.

It is an amenable number.

1021116 is an abundant number, since it is smaller than the sum of its proper divisors (1361516).

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

1021116 is a wasteful number, since it uses less digits than its factorization.

1021116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85100 (or 85098 counting only the distinct ones).

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

The square root of 1021116 is about 1010.5028451222. The cubic root of 1021116 is about 100.6989696974.

Adding to 1021116 its reverse (6111201), we get a palindrome (7132317).

The spelling of 1021116 in words is "one million, twenty-one thousand, one hundred sixteen".