21211242343214 has 64 divisors (see below), whose sum is σ = 41064976512000. Its totient is φ = 7973444908800.

The previous prime is 21211242343177. The next prime is 21211242343231. The reversal of 21211242343214 is 41234324211212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4550474 + ... + 7945394.

It is an arithmetic number, because the mean of its divisors is an integer number (641640258000).

Almost surely, 2^{21211242343214} is an apocalyptic number.

21211242343214 is a deficient number, since it is larger than the sum of its proper divisors (19853734168786).

21211242343214 is a wasteful number, since it uses less digits than its factorization.

21211242343214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396369.

The product of its digits is 18432, while the sum is 32.

Adding to 21211242343214 its reverse (41234324211212), we get a palindrome (62445566554426).

The spelling of 21211242343214 in words is "twenty-one trillion, two hundred eleven billion, two hundred forty-two million, three hundred forty-three thousand, two hundred fourteen".