21340310433312 has 96 divisors (see below), whose sum is σ = 62273461824000. Its totient is φ = 6354434856960.

The previous prime is 21340310433287. The next prime is 21340310433317. The reversal of 21340310433312 is 21333401304312.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 21340310433312.

It is not an unprimeable number, because it can be changed into a prime (21340310433317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275761437 + ... + 275838812.

It is an arithmetic number, because the mean of its divisors is an integer number (648681894000).

Almost surely, 2^{21340310433312} is an apocalyptic number.

It is an amenable number.

21340310433312 is an abundant number, since it is smaller than the sum of its proper divisors (40933151390688).

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

21340310433312 is a wasteful number, since it uses less digits than its factorization.

21340310433312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551600306 (or 551600298 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 21340310433312 its reverse (21333401304312), we get a palindrome (42673711737624).

The spelling of 21340310433312 in words is "twenty-one trillion, three hundred forty billion, three hundred ten million, four hundred thirty-three thousand, three hundred twelve".