221064703 has 2 divisors, whose sum is σ = 221064704. Its totient is φ = 221064702.

The previous prime is 221064653. The next prime is 221064731. The reversal of 221064703 is 307460122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221064703 - 2¹⁷ = 220933631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221064803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110532351 + 110532352.

It is an arithmetic number, because the mean of its divisors is an integer number (110532352).

Almost surely, 2^221064703 is an apocalyptic number.

221064703 is a deficient number, since it is larger than the sum of its proper divisors (1).

221064703 is an equidigital number, since it uses as much as digits as its factorization.

221064703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 221064703 is about 14868.2447854479. The cubic root of 221064703 is about 604.6533569644.

The spelling of 221064703 in words is "two hundred twenty-one million, sixty-four thousand, seven hundred three".