14220718821 has 24 divisors (see below), whose sum is σ = 20810599680. Its totient is φ = 9356177376.

The previous prime is 14220718819. The next prime is 14220718849. The reversal of 14220718821 is 12881702241.

It is a happy number.

It is not a de Polignac number, because 14220718821 - 2¹ = 14220718819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14220718801) 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, 2526216 + ... + 2531838.

It is an arithmetic number, because the mean of its divisors is an integer number (867108320).

Almost surely, 2^14220718821 is an apocalyptic number.

It is an amenable number.

14220718821 is a deficient number, since it is larger than the sum of its proper divisors (6589880859).

14220718821 is a wasteful number, since it uses less digits than its factorization.

14220718821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9265 (or 9262 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

It can be divided in two parts, 142207 and 18821, that added together give a triangular number (161028 = T₅₆₇).

The spelling of 14220718821 in words is "fourteen billion, two hundred twenty million, seven hundred eighteen thousand, eight hundred twenty-one".