1000221221983 has 2 divisors, whose sum is σ = 1000221221984. Its totient is φ = 1000221221982.

The previous prime is 1000221221977. The next prime is 1000221222017. The reversal of 1000221221983 is 3891221220001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000221221983 - 2¹³ = 1000221213791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000221222983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500110610991 + 500110610992.

It is an arithmetic number, because the mean of its divisors is an integer number (500110610992).

Almost surely, 2^{1000221221983} is an apocalyptic number.

1000221221983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000221221983 is an equidigital number, since it uses as much as digits as its factorization.

1000221221983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

Adding to 1000221221983 its reverse (3891221220001), we get a palindrome (4891442441984).

The spelling of 1000221221983 in words is "one trillion, two hundred twenty-one million, two hundred twenty-one thousand, nine hundred eighty-three".