150221215 has 4 divisors (see below), whose sum is σ = 180265464. Its totient is φ = 120176968.

The previous prime is 150221209. The next prime is 150221233. The reversal of 150221215 is 512122051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512122051 = 7 ⋅73160293.

It is a cyclic number.

It is not a de Polignac number, because 150221215 - 2³ = 150221207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 150221192 and 150221201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15022117 + ... + 15022126.

It is an arithmetic number, because the mean of its divisors is an integer number (45066366).

Almost surely, 2^150221215 is an apocalyptic number.

150221215 is a deficient number, since it is larger than the sum of its proper divisors (30044249).

150221215 is an equidigital number, since it uses as much as digits as its factorization.

150221215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30044248.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 150221215 is about 12256.4764512481. The cubic root of 150221215 is about 531.5903518682.

Adding to 150221215 its reverse (512122051), we get a palindrome (662343266).

The spelling of 150221215 in words is "one hundred fifty million, two hundred twenty-one thousand, two hundred fifteen".