16122252281 has 2 divisors, whose sum is σ = 16122252282. Its totient is φ = 16122252280.

The previous prime is 16122252271. The next prime is 16122252301. The reversal of 16122252281 is 18225222161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15604007056 + 518245225 = 124916^2 + 22765^2 .

It is a cyclic number.

It is not a de Polignac number, because 16122252281 - 2⁶ = 16122252217 is a prime.

It is a super-2 number, since 2×16122252281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16122252271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8061126140 + 8061126141.

It is an arithmetic number, because the mean of its divisors is an integer number (8061126141).

Almost surely, 2^16122252281 is an apocalyptic number.

It is an amenable number.

16122252281 is a deficient number, since it is larger than the sum of its proper divisors (1).

16122252281 is an equidigital number, since it uses as much as digits as its factorization.

16122252281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 32.

The spelling of 16122252281 in words is "sixteen billion, one hundred twenty-two million, two hundred fifty-two thousand, two hundred eighty-one".