21234342213330 has 16 divisors (see below), whose sum is σ = 50962421312064. Its totient is φ = 5662491256880.

The previous prime is 21234342213283. The next prime is 21234342213367. The reversal of 21234342213330 is 3331224343212.

It is a junction number, because it is equal to n+sod(n) for n = 21234342213291 and 21234342213300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353905703526 + ... + 353905703585.

It is an arithmetic number, because the mean of its divisors is an integer number (3185151332004).

Almost surely, 2^{21234342213330} is an apocalyptic number.

21234342213330 is an abundant number, since it is smaller than the sum of its proper divisors (29728079098734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21234342213330 is a wasteful number, since it uses less digits than its factorization.

21234342213330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707811407121.

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 21234342213330 its reverse (3331224343212), we get a palindrome (24565566556542).

The spelling of 21234342213330 in words is "twenty-one trillion, two hundred thirty-four billion, three hundred forty-two million, two hundred thirteen thousand, three hundred thirty".