16060016221 has 2 divisors, whose sum is σ = 16060016222. Its totient is φ = 16060016220.

The previous prime is 16060016213. The next prime is 16060016237. The reversal of 16060016221 is 12261006061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15438062500 + 621953721 = 124250^2 + 24939^2 .

It is a cyclic number.

It is not a de Polignac number, because 16060016221 - 2³ = 16060016213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16060014221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8030008110 + 8030008111.

It is an arithmetic number, because the mean of its divisors is an integer number (8030008111).

Almost surely, 2^16060016221 is an apocalyptic number.

It is an amenable number.

16060016221 is a deficient number, since it is larger than the sum of its proper divisors (1).

16060016221 is an equidigital number, since it uses as much as digits as its factorization.

16060016221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 16060016221 in words is "sixteen billion, sixty million, sixteen thousand, two hundred twenty-one".