2616066221 has 2 divisors, whose sum is σ = 2616066222. Its totient is φ = 2616066220.

The previous prime is 2616066217. The next prime is 2616066239. The reversal of 2616066221 is 1226606162.

2616066221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1790136100 + 825930121 = 42310^2 + 28739^2 .

It is a cyclic number.

It is not a de Polignac number, because 2616066221 - 2² = 2616066217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2616069221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1308033110 + 1308033111.

It is an arithmetic number, because the mean of its divisors is an integer number (1308033111).

Almost surely, 2^2616066221 is an apocalyptic number.

It is an amenable number.

2616066221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2616066221 is an equidigital number, since it uses as much as digits as its factorization.

2616066221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2616066221 is about 51147.4947675837. The cubic root of 2616066221 is about 1377.8953813142.

The spelling of 2616066221 in words is "two billion, six hundred sixteen million, sixty-six thousand, two hundred twenty-one".