1116021 has 8 divisors (see below), whose sum is σ = 1516320. Its totient is φ = 729872.

The previous prime is 1116001. The next prime is 1116053. The reversal of 1116021 is 1206111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1116021 - 2¹⁵ = 1083253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1115988 and 1116006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3351 + ... + 3668.

It is an arithmetic number, because the mean of its divisors is an integer number (189540).

2^1116021 is an apocalyptic number.

It is an amenable number.

1116021 is a deficient number, since it is larger than the sum of its proper divisors (400299).

1116021 is an equidigital number, since it uses as much as digits as its factorization.

1116021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7075.

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

The square root of 1116021 is about 1056.4189509849. The cubic root of 1116021 is about 103.7267543605.

The spelling of 1116021 in words is "one million, one hundred sixteen thousand, twenty-one".