1324221091 has 2 divisors, whose sum is σ = 1324221092. Its totient is φ = 1324221090.

The previous prime is 1324221037. The next prime is 1324221149. The reversal of 1324221091 is 1901224231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1324221091 - 2¹⁵ = 1324188323 is a prime.

It is a super-2 number, since 2×1324221091² = 3507122995698460562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1324221191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662110545 + 662110546.

It is an arithmetic number, because the mean of its divisors is an integer number (662110546).

Almost surely, 2^1324221091 is an apocalyptic number.

1324221091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324221091 is an equidigital number, since it uses as much as digits as its factorization.

1324221091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1324221091 is about 36389.8487356021. The cubic root of 1324221091 is about 1098.1293525575.

The spelling of 1324221091 in words is "one billion, three hundred twenty-four million, two hundred twenty-one thousand, ninety-one".