150302221 has 4 divisors (see below), whose sum is σ = 151991100. Its totient is φ = 148613344.

The previous prime is 150302203. The next prime is 150302237. The reversal of 150302221 is 122203051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13060996 + 137241225 = 3614^2 + 11715^2 .

It is a cyclic number.

It is not a de Polignac number, because 150302221 - 2⁵ = 150302189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 150302195 and 150302204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150302821) 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, 844306 + ... + 844483.

It is an arithmetic number, because the mean of its divisors is an integer number (37997775).

Almost surely, 2^150302221 is an apocalyptic number.

It is an amenable number.

150302221 is a deficient number, since it is larger than the sum of its proper divisors (1688879).

150302221 is an equidigital number, since it uses as much as digits as its factorization.

150302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688878.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 150302221 is about 12259.7806260960. The cubic root of 150302221 is about 531.6858871316.

Adding to 150302221 its reverse (122203051), we get a palindrome (272505272).

The spelling of 150302221 in words is "one hundred fifty million, three hundred two thousand, two hundred twenty-one".