6221019682169 has 2 divisors, whose sum is σ = 6221019682170. Its totient is φ = 6221019682168.

The previous prime is 6221019682151. The next prime is 6221019682259. The reversal of 6221019682169 is 9612869101226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4494718005625 + 1726301676544 = 2120075^2 + 1313888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6221019682169 is a prime.

It is a super-2 number, since 2×6221019682169² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6221019682169.

It is not a weakly prime, because it can be changed into another prime (6221019682069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110509841084 + 3110509841085.

It is an arithmetic number, because the mean of its divisors is an integer number (3110509841085).

Almost surely, 2^{6221019682169} is an apocalyptic number.

It is an amenable number.

6221019682169 is a deficient number, since it is larger than the sum of its proper divisors (1).

6221019682169 is an equidigital number, since it uses as much as digits as its factorization.

6221019682169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 6221019682169 in words is "six trillion, two hundred twenty-one billion, nineteen million, six hundred eighty-two thousand, one hundred sixty-nine".