160000210021 has 2 divisors, whose sum is σ = 160000210022. Its totient is φ = 160000210020.

The previous prime is 160000209983. The next prime is 160000210049. The reversal of 160000210021 is 120012000061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117135062500 + 42865147521 = 342250^2 + 207039^2 .

It is an emirp because it is prime and its reverse (120012000061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 160000210021 - 2¹¹ = 160000207973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 160000209983 and 160000210010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160000210121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80000105010 + 80000105011.

It is an arithmetic number, because the mean of its divisors is an integer number (80000105011).

Almost surely, 2^160000210021 is an apocalyptic number.

It is an amenable number.

160000210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

160000210021 is an equidigital number, since it uses as much as digits as its factorization.

160000210021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 160000210021 its reverse (120012000061), we get a palindrome (280012210082).

The spelling of 160000210021 in words is "one hundred sixty billion, two hundred ten thousand, twenty-one".