16030247021 has 2 divisors, whose sum is σ = 16030247022. Its totient is φ = 16030247020.

The previous prime is 16030246997. The next prime is 16030247027. The reversal of 16030247021 is 12074203061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15424398025 + 605848996 = 124195^2 + 24614^2 .

It is an emirp because it is prime and its reverse (12074203061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16030247021 - 2²⁶ = 15963138157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16030247027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8015123510 + 8015123511.

It is an arithmetic number, because the mean of its divisors is an integer number (8015123511).

Almost surely, 2^16030247021 is an apocalyptic number.

It is an amenable number.

16030247021 is a deficient number, since it is larger than the sum of its proper divisors (1).

16030247021 is an equidigital number, since it uses as much as digits as its factorization.

16030247021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 16030247021 in words is "sixteen billion, thirty million, two hundred forty-seven thousand, twenty-one".