1312221083 has 2 divisors, whose sum is σ = 1312221084. Its totient is φ = 1312221082.

The previous prime is 1312221061. The next prime is 1312221151. The reversal of 1312221083 is 3801222131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312221083 - 2⁶ = 1312221019 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312221683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656110541 + 656110542.

It is an arithmetic number, because the mean of its divisors is an integer number (656110542).

Almost surely, 2^1312221083 is an apocalyptic number.

1312221083 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312221083 is an equidigital number, since it uses as much as digits as its factorization.

1312221083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1312221083 is about 36224.5922406312. The cubic root of 1312221083 is about 1094.8022225035.

The spelling of 1312221083 in words is "one billion, three hundred twelve million, two hundred twenty-one thousand, eighty-three".