14164228021 has 4 divisors (see below), whose sum is σ = 14164671852. Its totient is φ = 14163784192.

The previous prime is 14164228009. The next prime is 14164228027. The reversal of 14164228021 is 12082246141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2045300625 + 12118927396 = 45225^2 + 110086^2 .

It is a cyclic number.

It is not a de Polignac number, because 14164228021 - 2¹¹ = 14164225973 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 (14164228027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169996 + ... + 239221.

It is an arithmetic number, because the mean of its divisors is an integer number (3541167963).

Almost surely, 2^14164228021 is an apocalyptic number.

It is an amenable number.

14164228021 is a deficient number, since it is larger than the sum of its proper divisors (443831).

14164228021 is an equidigital number, since it uses as much as digits as its factorization.

14164228021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443830.

The product of its (nonzero) digits is 6144, while the sum is 31.

The spelling of 14164228021 in words is "fourteen billion, one hundred sixty-four million, two hundred twenty-eight thousand, twenty-one".