147371221 has 8 divisors (see below), whose sum is σ = 150933888. Its totient is φ = 143850000.

The previous prime is 147371219. The next prime is 147371233. The reversal of 147371221 is 122173741.

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

It is a cyclic number.

It is not a de Polignac number, because 147371221 - 2¹ = 147371219 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 147371221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147371251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3105 + ... + 17446.

It is an arithmetic number, because the mean of its divisors is an integer number (18866736).

Almost surely, 2^147371221 is an apocalyptic number.

It is an amenable number.

147371221 is a deficient number, since it is larger than the sum of its proper divisors (3562667).

147371221 is a wasteful number, since it uses less digits than its factorization.

147371221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20723.

The product of its digits is 2352, while the sum is 28.

The square root of 147371221 is about 12139.6548962481. The cubic root of 147371221 is about 528.2070911034.

The spelling of 147371221 in words is "one hundred forty-seven million, three hundred seventy-one thousand, two hundred twenty-one".