606541061221 has 2 divisors, whose sum is σ = 606541061222. Its totient is φ = 606541061220.

The previous prime is 606541061213. The next prime is 606541061237. The reversal of 606541061221 is 122160145606.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 437332238721 + 169208822500 = 661311^2 + 411350^2 .

It is a cyclic number.

It is not a de Polignac number, because 606541061221 - 2³ = 606541061213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (606541061281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303270530610 + 303270530611.

It is an arithmetic number, because the mean of its divisors is an integer number (303270530611).

Almost surely, 2^606541061221 is an apocalyptic number.

It is an amenable number.

606541061221 is a deficient number, since it is larger than the sum of its proper divisors (1).

606541061221 is an equidigital number, since it uses as much as digits as its factorization.

606541061221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 606541061221 in words is "six hundred six billion, five hundred forty-one million, sixty-one thousand, two hundred twenty-one".