21334343231040 has 224 divisors, whose sum is σ = 80778979676160. Its totient is φ = 4664402958336.

The previous prime is 21334343231021. The next prime is 21334343231041. The reversal of 21334343231040 is 4013234343312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a junction number, because it is equal to n+sod(n) for n = 21334343230992 and 21334343231010.

It is not an unprimeable number, because it can be changed into a prime (21334343231041) 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, 68861820 + ... + 69170939.

Almost surely, 2^{21334343231040} is an apocalyptic number.

21334343231040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21334343231040 is an abundant number, since it is smaller than the sum of its proper divisors (59444636445120).

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

21334343231040 is a wasteful number, since it uses less digits than its factorization.

21334343231040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138032809 (or 138032799 counting only the distinct ones).

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

Adding to 21334343231040 its reverse (4013234343312), we get a palindrome (25347577574352).

The spelling of 21334343231040 in words is "twenty-one trillion, three hundred thirty-four billion, three hundred forty-three million, two hundred thirty-one thousand, forty".