21353434222 has 16 divisors (see below), whose sum is σ = 35083737360. Its totient is φ = 9702168448.

The previous prime is 21353434217. The next prime is 21353434237. The reversal of 21353434222 is 22243435312.

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, 10827328 + ... + 10829299.

It is an arithmetic number, because the mean of its divisors is an integer number (2192733585).

Almost surely, 2^21353434222 is an apocalyptic number.

21353434222 is a deficient number, since it is larger than the sum of its proper divisors (13730303138).

21353434222 is a wasteful number, since it uses less digits than its factorization.

21353434222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21656675.

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

Adding to 21353434222 its reverse (22243435312), we get a palindrome (43596869534).

The spelling of 21353434222 in words is "twenty-one billion, three hundred fifty-three million, four hundred thirty-four thousand, two hundred twenty-two".