21105243354214 has 8 divisors (see below), whose sum is σ = 31852085062680. Its totient is φ = 10487881666656.

The previous prime is 21105243354203. The next prime is 21105243354241. The reversal of 21105243354214 is 41245334250112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32370004819 + ... + 32370005470.

It is an arithmetic number, because the mean of its divisors is an integer number (3981510632835).

Almost surely, 2^{21105243354214} is an apocalyptic number.

21105243354214 is a deficient number, since it is larger than the sum of its proper divisors (10746841708466).

21105243354214 is a wasteful number, since it uses less digits than its factorization.

21105243354214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64740010454.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 21105243354214 in words is "twenty-one trillion, one hundred five billion, two hundred forty-three million, three hundred fifty-four thousand, two hundred fourteen".