14972221 has 8 divisors (see below), whose sum is σ = 16380000. Its totient is φ = 13572240.

The previous prime is 14972201. The next prime is 14972233. The reversal of 14972221 is 12227941.

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

It is a de Polignac number, because none of the positive numbers 2^k-14972221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14972221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14972201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2530 + ... + 6028.

It is an arithmetic number, because the mean of its divisors is an integer number (2047500).

Almost surely, 2^14972221 is an apocalyptic number.

14972221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14972221 is a deficient number, since it is larger than the sum of its proper divisors (1407779).

14972221 is a wasteful number, since it uses less digits than its factorization.

14972221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899.

The product of its digits is 2016, while the sum is 28.

The square root of 14972221 is about 3869.3954308134. The cubic root of 14972221 is about 246.4688713440.

The spelling of 14972221 in words is "fourteen million, nine hundred seventy-two thousand, two hundred twenty-one".