146132221 has 8 divisors (see below), whose sum is σ = 154923840. Its totient is φ = 137362368.

The previous prime is 146132219. The next prime is 146132227. The reversal of 146132221 is 122231641.

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 146132221 - 2¹ = 146132219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146132192 and 146132201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146132227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9600 + ... + 19606.

It is an arithmetic number, because the mean of its divisors is an integer number (19365480).

Almost surely, 2^146132221 is an apocalyptic number.

It is an amenable number.

146132221 is a deficient number, since it is larger than the sum of its proper divisors (8791619).

146132221 is a wasteful number, since it uses less digits than its factorization.

146132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10883.

The product of its digits is 576, while the sum is 22.

The square root of 146132221 is about 12088.5160793209. The cubic root of 146132221 is about 526.7226509858.

Adding to 146132221 its reverse (122231641), we get a palindrome (268363862).

The spelling of 146132221 in words is "one hundred forty-six million, one hundred thirty-two thousand, two hundred twenty-one".