21342343222 has 16 divisors (see below), whose sum is σ = 32419712160. Its totient is φ = 10536491392.

The previous prime is 21342343189. The next prime is 21342343271. The reversal of 21342343222 is 22234324312.

It is a super-2 number, since 2×21342343222² (a number of 21 digits) contains 22 as substring.

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, 120097 + ... + 238972.

It is an arithmetic number, because the mean of its divisors is an integer number (2026232010).

Almost surely, 2^21342343222 is an apocalyptic number.

21342343222 is a deficient number, since it is larger than the sum of its proper divisors (11077368938).

21342343222 is a wasteful number, since it uses less digits than its factorization.

21342343222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359447.

The product of its digits is 13824, while the sum is 28.

Adding to 21342343222 its reverse (22234324312), we get a palindrome (43576667534).

It can be divided in two parts, 21 and 342343222, that added together give a palindrome (342343243).

The spelling of 21342343222 in words is "twenty-one billion, three hundred forty-two million, three hundred forty-three thousand, two hundred twenty-two".