221301404323 has 2 divisors, whose sum is σ = 221301404324. Its totient is φ = 221301404322.

The previous prime is 221301404279. The next prime is 221301404353. The reversal of 221301404323 is 323404103122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221301404323 - 2¹³ = 221301396131 is a prime.

It is not a weakly prime, because it can be changed into another prime (221301404353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110650702161 + 110650702162.

It is an arithmetic number, because the mean of its divisors is an integer number (110650702162).

Almost surely, 2^221301404323 is an apocalyptic number.

221301404323 is a deficient number, since it is larger than the sum of its proper divisors (1).

221301404323 is an equidigital number, since it uses as much as digits as its factorization.

221301404323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 221301404323 its reverse (323404103122), we get a palindrome (544705507445).

The spelling of 221301404323 in words is "two hundred twenty-one billion, three hundred one million, four hundred four thousand, three hundred twenty-three".