13922705217421 has 24 divisors (see below), whose sum is σ = 18796133519424. Its totient is φ = 10014333413760.

The previous prime is 13922705217397. The next prime is 13922705217427. The reversal of 13922705217421 is 12471250722931.

13922705217421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13922705217421 - 2¹¹ = 13922705215373 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 (13922705217427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 534940696 + ... + 534966721.

It is an arithmetic number, because the mean of its divisors is an integer number (783172229976).

Almost surely, 2^{13922705217421} is an apocalyptic number.

13922705217421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13922705217421 is a deficient number, since it is larger than the sum of its proper divisors (4873428302003).

13922705217421 is a wasteful number, since it uses less digits than its factorization.

13922705217421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069907461 (or 1069907448 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 13922705217421 in words is "thirteen trillion, nine hundred twenty-two billion, seven hundred five million, two hundred seventeen thousand, four hundred twenty-one".