1141221091 has 2 divisors, whose sum is σ = 1141221092. Its totient is φ = 1141221090.

The previous prime is 1141221077. The next prime is 1141221139. The reversal of 1141221091 is 1901221411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1141221091 - 2¹⁷ = 1141090019 is a prime.

It is not a weakly prime, because it can be changed into another prime (1141221071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570610545 + 570610546.

It is an arithmetic number, because the mean of its divisors is an integer number (570610546).

Almost surely, 2^1141221091 is an apocalyptic number.

1141221091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1141221091 is an equidigital number, since it uses as much as digits as its factorization.

1141221091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1141221091 is about 33781.9639896795. The cubic root of 1141221091 is about 1045.0167777348.

The spelling of 1141221091 in words is "one billion, one hundred forty-one million, two hundred twenty-one thousand, ninety-one".