221632063 has 2 divisors, whose sum is σ = 221632064. Its totient is φ = 221632062.

The previous prime is 221632049. The next prime is 221632067. The reversal of 221632063 is 360236122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221632063 - 2⁹ = 221631551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221632067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110816031 + 110816032.

It is an arithmetic number, because the mean of its divisors is an integer number (110816032).

Almost surely, 2^221632063 is an apocalyptic number.

221632063 is a deficient number, since it is larger than the sum of its proper divisors (1).

221632063 is an equidigital number, since it uses as much as digits as its factorization.

221632063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 221632063 is about 14887.3121482691. The cubic root of 221632063 is about 605.1701936771.

Adding to 221632063 its reverse (360236122), we get a palindrome (581868185).

The spelling of 221632063 in words is "two hundred twenty-one million, six hundred thirty-two thousand, sixty-three".