1117021 has 2 divisors, whose sum is σ = 1117022. Its totient is φ = 1117020.

The previous prime is 1117013. The next prime is 1117027. The reversal of 1117021 is 1207111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1071225 + 45796 = 1035^2 + 214^2 .

It is an emirp because it is prime and its reverse (1207111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1117021 - 2³ = 1117013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1116992 and 1117010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558510 + 558511.

It is an arithmetic number, because the mean of its divisors is an integer number (558511).

2^1117021 is an apocalyptic number.

It is an amenable number.

1117021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117021 is an equidigital number, since it uses as much as digits as its factorization.

1117021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 1117021 is about 1056.8921420845. The cubic root of 1117021 is about 103.7577262355.

The spelling of 1117021 in words is "one million, one hundred seventeen thousand, twenty-one".