221431023363434 has 8 divisors (see below), whose sum is σ = 332147907954468. Its totient is φ = 110715054045280.

The previous prime is 221431023363397. The next prime is 221431023363443. The reversal of 221431023363434 is 434363320134122.

It can be written as a sum of positive squares in 2 ways, for example, as 217830885219025 + 3600138144409 = 14759095^2 + 1897403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221431023363391 and 221431023363400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228213077 + ... + 229181304.

Almost surely, 2^{221431023363434} is an apocalyptic number.

221431023363434 is a deficient number, since it is larger than the sum of its proper divisors (110716884591034).

221431023363434 is a wasteful number, since it uses less digits than its factorization.

221431023363434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457636440.

The product of its (nonzero) digits is 746496, while the sum is 41.

Adding to 221431023363434 its reverse (434363320134122), we get a palindrome (655794343497556).

The spelling of 221431023363434 in words is "two hundred twenty-one trillion, four hundred thirty-one billion, twenty-three million, three hundred sixty-three thousand, four hundred thirty-four".