221434342334 has 8 divisors (see below), whose sum is σ = 336829704048. Its totient is φ = 109157774320.

The previous prime is 221434342309. The next prime is 221434342351. The reversal of 221434342334 is 433243434122.

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

It is a super-2 number, since 2×221434342334² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221434342294 and 221434342303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779698247 + ... + 779698530.

It is an arithmetic number, because the mean of its divisors is an integer number (42103713006).

Almost surely, 2^221434342334 is an apocalyptic number.

221434342334 is a deficient number, since it is larger than the sum of its proper divisors (115395361714).

221434342334 is a wasteful number, since it uses less digits than its factorization.

221434342334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559396850.

The product of its digits is 165888, while the sum is 35.

Adding to 221434342334 its reverse (433243434122), we get a palindrome (654677776456).

The spelling of 221434342334 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred forty-two thousand, three hundred thirty-four".