150442221 has 4 divisors (see below), whose sum is σ = 200589632. Its totient is φ = 100294812.

The previous prime is 150442219. The next prime is 150442223. The reversal of 150442221 is 122244051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (150442219) and next prime (150442223).

It is not a de Polignac number, because 150442221 - 2¹ = 150442219 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150442223) 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, 25073701 + ... + 25073706.

It is an arithmetic number, because the mean of its divisors is an integer number (50147408).

Almost surely, 2^150442221 is an apocalyptic number.

It is an amenable number.

150442221 is a deficient number, since it is larger than the sum of its proper divisors (50147411).

150442221 is an equidigital number, since it uses as much as digits as its factorization.

150442221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50147410.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 150442221 is about 12265.4890240871. The cubic root of 150442221 is about 531.8509166842.

Adding to 150442221 its reverse (122244051), we get a palindrome (272686272).

The spelling of 150442221 in words is "one hundred fifty million, four hundred forty-two thousand, two hundred twenty-one".