16228220429 has 2 divisors, whose sum is σ = 16228220430. Its totient is φ = 16228220428.

The previous prime is 16228220389. The next prime is 16228220441. The reversal of 16228220429 is 92402282261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10329673225 + 5898547204 = 101635^2 + 76802^2 .

It is an emirp because it is prime and its reverse (92402282261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16228220429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16228220392 and 16228220401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16228220479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8114110214 + 8114110215.

It is an arithmetic number, because the mean of its divisors is an integer number (8114110215).

Almost surely, 2^16228220429 is an apocalyptic number.

It is an amenable number.

16228220429 is a deficient number, since it is larger than the sum of its proper divisors (1).

16228220429 is an equidigital number, since it uses as much as digits as its factorization.

16228220429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 16228220429 in words is "sixteen billion, two hundred twenty-eight million, two hundred twenty thousand, four hundred twenty-nine".