21334210011344 has 20 divisors (see below), whose sum is σ = 41336784187200. Its totient is φ = 10666652801760.

The previous prime is 21334210011341. The next prime is 21334210011427. The reversal of 21334210011344 is 44311001243312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334210011341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27873362 + ... + 28628529.

It is an arithmetic number, because the mean of its divisors is an integer number (2066839209360).

Almost surely, 2^{21334210011344} is an apocalyptic number.

It is an amenable number.

21334210011344 is a deficient number, since it is larger than the sum of its proper divisors (20002574175856).

21334210011344 is a wasteful number, since it uses less digits than its factorization.

21334210011344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56525498 (or 56525492 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21334210011344 its reverse (44311001243312), we get a palindrome (65645211254656).

The spelling of 21334210011344 in words is "twenty-one trillion, three hundred thirty-four billion, two hundred ten million, eleven thousand, three hundred forty-four".