221257063 has 2 divisors, whose sum is σ = 221257064. Its totient is φ = 221257062.

The previous prime is 221257031. The next prime is 221257093. The reversal of 221257063 is 360752122.

221257063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221257063 - 2⁵ = 221257031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221257093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110628531 + 110628532.

It is an arithmetic number, because the mean of its divisors is an integer number (110628532).

Almost surely, 2^221257063 is an apocalyptic number.

221257063 is a deficient number, since it is larger than the sum of its proper divisors (1).

221257063 is an equidigital number, since it uses as much as digits as its factorization.

221257063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 221257063 is about 14874.7121988965. The cubic root of 221257063 is about 604.8286863263.

The spelling of 221257063 in words is "two hundred twenty-one million, two hundred fifty-seven thousand, sixty-three".