221305433422 has 4 divisors (see below), whose sum is σ = 331958150136. Its totient is φ = 110652716710.

The previous prime is 221305433413. The next prime is 221305433443. The reversal of 221305433422 is 224334503122.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55326358354 + ... + 55326358357.

It is an arithmetic number, because the mean of its divisors is an integer number (82989537534).

Almost surely, 2^221305433422 is an apocalyptic number.

221305433422 is a deficient number, since it is larger than the sum of its proper divisors (110652716714).

221305433422 is a wasteful number, since it uses less digits than its factorization.

221305433422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110652716713.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 221305433422 its reverse (224334503122), we get a palindrome (445639936544).

The spelling of 221305433422 in words is "two hundred twenty-one billion, three hundred five million, four hundred thirty-three thousand, four hundred twenty-two".