221655700065703 has 2 divisors, whose sum is σ = 221655700065704. Its totient is φ = 221655700065702.

The previous prime is 221655700065623. The next prime is 221655700065749. The reversal of 221655700065703 is 307560007556122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221655700065703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221655700065773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110827850032851 + 110827850032852.

It is an arithmetic number, because the mean of its divisors is an integer number (110827850032852).

Almost surely, 2^{221655700065703} is an apocalyptic number.

221655700065703 is a deficient number, since it is larger than the sum of its proper divisors (1).

221655700065703 is an equidigital number, since it uses as much as digits as its factorization.

221655700065703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 221655700065703 in words is "two hundred twenty-one trillion, six hundred fifty-five billion, seven hundred million, sixty-five thousand, seven hundred three".