221434342342 has 16 divisors (see below), whose sum is σ = 339377314752. Its totient is φ = 108310775680.

The previous prime is 221434342309. The next prime is 221434342351. The reversal of 221434342342 is 243243434122.

It is a junction number, because it is equal to n+sod(n) for n = 221434342298 and 221434342307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348883 + ... + 751390.

It is an arithmetic number, because the mean of its divisors is an integer number (21211082172).

Almost surely, 2^221434342342 is an apocalyptic number.

221434342342 is a deficient number, since it is larger than the sum of its proper divisors (117942972410).

221434342342 is a wasteful number, since it uses less digits than its factorization.

221434342342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102463.

The product of its digits is 110592, while the sum is 34.

Adding to 221434342342 its reverse (243243434122), we get a palindrome (464677776464).

The spelling of 221434342342 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred forty-two thousand, three hundred forty-two".