16221046337 has 2 divisors, whose sum is σ = 16221046338. Its totient is φ = 16221046336.

The previous prime is 16221046333. The next prime is 16221046363. The reversal of 16221046337 is 73364012261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16206308416 + 14737921 = 127304^2 + 3839^2 .

It is a cyclic number.

It is not a de Polignac number, because 16221046337 - 2² = 16221046333 is a prime.

It is a super-2 number, since 2×16221046337² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16221046297 and 16221046306.

It is not a weakly prime, because it can be changed into another prime (16221046333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110523168 + 8110523169.

It is an arithmetic number, because the mean of its divisors is an integer number (8110523169).

Almost surely, 2^16221046337 is an apocalyptic number.

It is an amenable number.

16221046337 is a deficient number, since it is larger than the sum of its proper divisors (1).

16221046337 is an equidigital number, since it uses as much as digits as its factorization.

16221046337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

Adding to 16221046337 its reverse (73364012261), we get a palindrome (89585058598).

The spelling of 16221046337 in words is "sixteen billion, two hundred twenty-one million, forty-six thousand, three hundred thirty-seven".