1149221 has 2 divisors, whose sum is σ = 1149222. Its totient is φ = 1149220.

The previous prime is 1149209. The next prime is 1149227. The reversal of 1149221 is 1229411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050625 + 98596 = 1025^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149221 - 2⁶ = 1149157 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1149193 and 1149202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1149227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574610 + 574611.

It is an arithmetic number, because the mean of its divisors is an integer number (574611).

2^1149221 is an apocalyptic number.

It is an amenable number.

1149221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149221 is an equidigital number, since it uses as much as digits as its factorization.

1149221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

The square root of 1149221 is about 1072.0172573238. The cubic root of 1149221 is about 104.7452934471.

The spelling of 1149221 in words is "one million, one hundred forty-nine thousand, two hundred twenty-one".