1127221 has 2 divisors, whose sum is σ = 1127222. Its totient is φ = 1127220.

The previous prime is 1127209. The next prime is 1127227. The reversal of 1127221 is 1227211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 784996 + 342225 = 886^2 + 585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1127221 - 2¹³ = 1119029 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1127195 and 1127204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1127227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563610 + 563611.

It is an arithmetic number, because the mean of its divisors is an integer number (563611).

2^1127221 is an apocalyptic number.

It is an amenable number.

1127221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127221 is an equidigital number, since it uses as much as digits as its factorization.

1127221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56, while the sum is 16.

The square root of 1127221 is about 1061.7066449825. The cubic root of 1127221 is about 104.0725886235.

The spelling of 1127221 in words is "one million, one hundred twenty-seven thousand, two hundred twenty-one".