150221333 has 6 divisors (see below), whose sum is σ = 159577986. Its totient is φ = 141384512.

The previous prime is 150221329. The next prime is 150221339. The reversal of 150221333 is 333122051.

It can be written as a sum of positive squares in 3 ways, for example, as 52171729 + 98049604 = 7223^2 + 9902^2 .

It is not a de Polignac number, because 150221333 - 2² = 150221329 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 (150221339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 259610 + ... + 260187.

It is an arithmetic number, because the mean of its divisors is an integer number (26596331).

Almost surely, 2^150221333 is an apocalyptic number.

It is an amenable number.

150221333 is a deficient number, since it is larger than the sum of its proper divisors (9356653).

150221333 is an equidigital number, since it uses as much as digits as its factorization.

150221333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519831 (or 519814 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 150221333 is about 12256.4812650287. The cubic root of 150221333 is about 531.5904910577.

Adding to 150221333 its reverse (333122051), we get a palindrome (483343384).

The spelling of 150221333 in words is "one hundred fifty million, two hundred twenty-one thousand, three hundred thirty-three".