21234234342300 has 144 divisors (see below), whose sum is σ = 73267340923392. Its totient is φ = 4642515820800.

The previous prime is 21234234342271. The next prime is 21234234342337. The reversal of 21234234342300 is 324343243212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219767791 + ... + 219864390.

Almost surely, 2^{21234234342300} is an apocalyptic number.

21234234342300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21234234342300 is an abundant number, since it is smaller than the sum of its proper divisors (52033106581092).

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

21234234342300 is a wasteful number, since it uses less digits than its factorization.

21234234342300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439632228 (or 439632221 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 21234234342300 its reverse (324343243212), we get a palindrome (21558577585512).

The spelling of 21234234342300 in words is "twenty-one trillion, two hundred thirty-four billion, two hundred thirty-four million, three hundred forty-two thousand, three hundred".