21344132240134 has 16 divisors (see below), whose sum is σ = 34928186743296. Its totient is φ = 9701482486600.

The previous prime is 21344132240131. The next prime is 21344132240209. The reversal of 21344132240134 is 43104223144312.

It is a self number, because there is not a number n which added to its sum of digits gives 21344132240134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344132240131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19238362 + ... + 20317549.

It is an arithmetic number, because the mean of its divisors is an integer number (2183011671456).

Almost surely, 2^{21344132240134} is an apocalyptic number.

21344132240134 is a deficient number, since it is larger than the sum of its proper divisors (13584054503162).

21344132240134 is a wasteful number, since it uses less digits than its factorization.

21344132240134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39580451.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 21344132240134 its reverse (43104223144312), we get a palindrome (64448355384446).

The spelling of 21344132240134 in words is "twenty-one trillion, three hundred forty-four billion, one hundred thirty-two million, two hundred forty thousand, one hundred thirty-four".