150404221 has 4 divisors (see below), whose sum is σ = 164077344. Its totient is φ = 136731100.

The previous prime is 150404203. The next prime is 150404249. The reversal of 150404221 is 122404051.

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 not a de Polignac number, because 150404221 - 2²³ = 142015613 is a prime.

It is a super-3 number, since 3×150404221³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150404021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6836545 + ... + 6836566.

It is an arithmetic number, because the mean of its divisors is an integer number (41019336).

Almost surely, 2^150404221 is an apocalyptic number.

150404221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

150404221 is a deficient number, since it is larger than the sum of its proper divisors (13673123).

150404221 is a wasteful number, since it uses less digits than its factorization.

150404221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13673122.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 150404221 is about 12263.9398644971. The cubic root of 150404221 is about 531.8061330754.

Adding to 150404221 its reverse (122404051), we get a palindrome (272808272).

The spelling of 150404221 in words is "one hundred fifty million, four hundred four thousand, two hundred twenty-one".