21352314353242 has 16 divisors (see below), whose sum is σ = 32182663010400. Its totient is φ = 10624767557040.

The previous prime is 21352314353207. The next prime is 21352314353261. The reversal of 21352314353242 is 24235341325312.

It is a junction number, because it is equal to n+sod(n) for n = 21352314353195 and 21352314353204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3805609 + ... + 7562227.

It is an arithmetic number, because the mean of its divisors is an integer number (2011416438150).

Almost surely, 2^{21352314353242} is an apocalyptic number.

21352314353242 is a deficient number, since it is larger than the sum of its proper divisors (10830348657158).

21352314353242 is a wasteful number, since it uses less digits than its factorization.

21352314353242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770301.

The product of its digits is 518400, while the sum is 40.

Adding to 21352314353242 its reverse (24235341325312), we get a palindrome (45587655678554).

The spelling of 21352314353242 in words is "twenty-one trillion, three hundred fifty-two billion, three hundred fourteen million, three hundred fifty-three thousand, two hundred forty-two".