221431023363435 has 32 divisors (see below), whose sum is σ = 358570237390848. Its totient is φ = 116674729987200.

The previous prime is 221431023363397. The next prime is 221431023363443. The reversal of 221431023363435 is 534363320134122.

It is not a de Polignac number, because 221431023363435 - 2³¹ = 221428875879787 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157137747 + ... + 158540636.

It is an arithmetic number, because the mean of its divisors is an integer number (11205319918464).

Almost surely, 2^{221431023363435} is an apocalyptic number.

221431023363435 is a deficient number, since it is larger than the sum of its proper divisors (137139214027413).

221431023363435 is a wasteful number, since it uses less digits than its factorization.

221431023363435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315678955.

The product of its (nonzero) digits is 933120, while the sum is 42.

Adding to 221431023363435 its reverse (534363320134122), we get a palindrome (755794343497557).

The spelling of 221431023363435 in words is "two hundred twenty-one trillion, four hundred thirty-one billion, twenty-three million, three hundred sixty-three thousand, four hundred thirty-five".