221232400327 has 2 divisors, whose sum is σ = 221232400328. Its totient is φ = 221232400326.

The previous prime is 221232400267. The next prime is 221232400351. The reversal of 221232400327 is 723004232122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221232400327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221232400295 and 221232400304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221232400357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110616200163 + 110616200164.

It is an arithmetic number, because the mean of its divisors is an integer number (110616200164).

Almost surely, 2^221232400327 is an apocalyptic number.

221232400327 is a deficient number, since it is larger than the sum of its proper divisors (1).

221232400327 is an equidigital number, since it uses as much as digits as its factorization.

221232400327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 221232400327 its reverse (723004232122), we get a palindrome (944236632449).

The spelling of 221232400327 in words is "two hundred twenty-one billion, two hundred thirty-two million, four hundred thousand, three hundred twenty-seven".