221234422 has 8 divisors (see below), whose sum is σ = 332619336. Its totient is φ = 110361312.

The previous prime is 221234407. The next prime is 221234437. The reversal of 221234422 is 224432122.

It is an interprime number because it is at equal distance from previous prime (221234407) and next prime (221234437).

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 = 221234393 and 221234402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126868 + ... + 128599.

It is an arithmetic number, because the mean of its divisors is an integer number (41577417).

Almost surely, 2^221234422 is an apocalyptic number.

221234422 is a deficient number, since it is larger than the sum of its proper divisors (111384914).

221234422 is a wasteful number, since it uses less digits than its factorization.

221234422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255902.

The product of its digits is 1536, while the sum is 22.

The square root of 221234422 is about 14873.9511226842. The cubic root of 221234422 is about 604.8080551304.

Adding to 221234422 its reverse (224432122), we get a palindrome (445666544).

The spelling of 221234422 in words is "two hundred twenty-one million, two hundred thirty-four thousand, four hundred twenty-two".