221400324203 has 2 divisors, whose sum is σ = 221400324204. Its totient is φ = 221400324202.

The previous prime is 221400324151. The next prime is 221400324221. The reversal of 221400324203 is 302423004122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221400324203 - 2⁶ = 221400324139 is a prime.

It is not a weakly prime, because it can be changed into another prime (221400314203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110700162101 + 110700162102.

It is an arithmetic number, because the mean of its divisors is an integer number (110700162102).

Almost surely, 2^221400324203 is an apocalyptic number.

221400324203 is a deficient number, since it is larger than the sum of its proper divisors (1).

221400324203 is an equidigital number, since it uses as much as digits as its factorization.

221400324203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 221400324203 its reverse (302423004122), we get a palindrome (523823328325).

The spelling of 221400324203 in words is "two hundred twenty-one billion, four hundred million, three hundred twenty-four thousand, two hundred three".