150221320 has 32 divisors (see below), whose sum is σ = 341803800. Its totient is φ = 59411968.

The previous prime is 150221287. The next prime is 150221321. The reversal of 150221320 is 23122051.

It can be written as a sum of positive squares in 4 ways, for example, as 62948356 + 87272964 = 7934^2 + 9342^2 .

It is a junction number, because it is equal to n+sod(n) for n = 150221294 and 150221303.

It is not an unprimeable number, because it can be changed into a prime (150221321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17539 + ... + 24658.

Almost surely, 2^150221320 is an apocalyptic number.

150221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

150221320 is an abundant number, since it is smaller than the sum of its proper divisors (191582480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

150221320 is a wasteful number, since it uses less digits than its factorization.

150221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42297 (or 42293 counting only the distinct ones).

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

The square root of 150221320 is about 12256.4807346971. The cubic root of 150221320 is about 531.5904757233.

Adding to 150221320 its reverse (23122051), we get a palindrome (173343371).

It can be divided in two parts, 1502 and 21320, that added together give a palindrome (22822).

The spelling of 150221320 in words is "one hundred fifty million, two hundred twenty-one thousand, three hundred twenty".