148221329 has 2 divisors, whose sum is σ = 148221330. Its totient is φ = 148221328.

The previous prime is 148221289. The next prime is 148221341. The reversal of 148221329 is 923122841.

148221329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141729025 + 6492304 = 11905^2 + 2548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148221329 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 148221295 and 148221304.

It is not a weakly prime, because it can be changed into another prime (148221379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74110664 + 74110665.

It is an arithmetic number, because the mean of its divisors is an integer number (74110665).

Almost surely, 2^148221329 is an apocalyptic number.

It is an amenable number.

148221329 is a deficient number, since it is larger than the sum of its proper divisors (1).

148221329 is an equidigital number, since it uses as much as digits as its factorization.

148221329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 148221329 is about 12174.6182281006. The cubic root of 148221329 is about 529.2207951684.

The spelling of 148221329 in words is "one hundred forty-eight million, two hundred twenty-one thousand, three hundred twenty-nine".