21342224140253 has 16 divisors (see below), whose sum is σ = 22214845204800. Its totient is φ = 20478729277440.

The previous prime is 21342224140249. The next prime is 21342224140297. The reversal of 21342224140253 is 35204142224312.

It is a cyclic number.

It is not a de Polignac number, because 21342224140253 - 2² = 21342224140249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342224160253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92207453 + ... + 92438621.

It is an arithmetic number, because the mean of its divisors is an integer number (1388427825300).

Almost surely, 2^{21342224140253} is an apocalyptic number.

It is an amenable number.

21342224140253 is a deficient number, since it is larger than the sum of its proper divisors (872621064547).

21342224140253 is a wasteful number, since it uses less digits than its factorization.

21342224140253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250892.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 21342224140253 its reverse (35204142224312), we get a palindrome (56546366364565).

The spelling of 21342224140253 in words is "twenty-one trillion, three hundred forty-two billion, two hundred twenty-four million, one hundred forty thousand, two hundred fifty-three".