221544674520227 has 2 divisors, whose sum is σ = 221544674520228. Its totient is φ = 221544674520226.

The previous prime is 221544674520193. The next prime is 221544674520263. The reversal of 221544674520227 is 722025476445122.

221544674520227 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 is a cyclic number.

It is not a de Polignac number, because 221544674520227 - 2²⁰ = 221544673471651 is a prime.

It is not a weakly prime, because it can be changed into another prime (221544674570227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110772337260113 + 110772337260114.

It is an arithmetic number, because the mean of its divisors is an integer number (110772337260114).

Almost surely, 2^{221544674520227} is an apocalyptic number.

221544674520227 is a deficient number, since it is larger than the sum of its proper divisors (1).

221544674520227 is an equidigital number, since it uses as much as digits as its factorization.

221544674520227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15052800, while the sum is 53.

The spelling of 221544674520227 in words is "two hundred twenty-one trillion, five hundred forty-four billion, six hundred seventy-four million, five hundred twenty thousand, two hundred twenty-seven".