21983327701 has 2 divisors, whose sum is σ = 21983327702. Its totient is φ = 21983327700.

The previous prime is 21983327687. The next prime is 21983327713. The reversal of 21983327701 is 10772338912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12510198801 + 9473128900 = 111849^2 + 97330^2 .

It is a cyclic number.

It is not a de Polignac number, because 21983327701 - 2⁹ = 21983327189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21983327791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10991663850 + 10991663851.

It is an arithmetic number, because the mean of its divisors is an integer number (10991663851).

Almost surely, 2^21983327701 is an apocalyptic number.

It is an amenable number.

21983327701 is a deficient number, since it is larger than the sum of its proper divisors (1).

21983327701 is an equidigital number, since it uses as much as digits as its factorization.

21983327701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 21983327701 in words is "twenty-one billion, nine hundred eighty-three million, three hundred twenty-seven thousand, seven hundred one".