152330221 has 4 divisors (see below), whose sum is σ = 156447292. Its totient is φ = 148213152.

The previous prime is 152330203. The next prime is 152330257. The reversal of 152330221 is 122033251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122033251 = 1109 ⋅110039.

It can be written as a sum of positive squares in 2 ways, for example, as 89302500 + 63027721 = 9450^2 + 7939^2 .

It is a cyclic number.

It is not a de Polignac number, because 152330221 - 2⁷ = 152330093 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 (152330261) 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, 2058480 + ... + 2058553.

It is an arithmetic number, because the mean of its divisors is an integer number (39111823).

Almost surely, 2^152330221 is an apocalyptic number.

It is an amenable number.

152330221 is a deficient number, since it is larger than the sum of its proper divisors (4117071).

152330221 is an equidigital number, since it uses as much as digits as its factorization.

152330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117070.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 152330221 is about 12342.2129701282. The cubic root of 152330221 is about 534.0665248846.

Adding to 152330221 its reverse (122033251), we get a palindrome (274363472).

The spelling of 152330221 in words is "one hundred fifty-two million, three hundred thirty thousand, two hundred twenty-one".