21340030001340 has 96 divisors (see below), whose sum is σ = 59927453703936. Its totient is φ = 5673976084480.

The previous prime is 21340030001263. The next prime is 21340030001347. The reversal of 21340030001340 is 4310003004312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21340030001347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232997755 + ... + 233089325.

It is an arithmetic number, because the mean of its divisors is an integer number (624244309416).

Almost surely, 2^{21340030001340} is an apocalyptic number.

21340030001340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21340030001340 is an abundant number, since it is smaller than the sum of its proper divisors (38587423702596).

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

21340030001340 is a wasteful number, since it uses less digits than its factorization.

21340030001340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102939 (or 102937 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21340030001340 its reverse (4310003004312), we get a palindrome (25650033005652).

The spelling of 21340030001340 in words is "twenty-one trillion, three hundred forty billion, thirty million, one thousand, three hundred forty".