151221336 has 64 divisors (see below), whose sum is σ = 433505280. Its totient is φ = 43061760.

The previous prime is 151221299. The next prime is 151221347. The reversal of 151221336 is 633122151.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55281 + ... + 57951.

It is an arithmetic number, because the mean of its divisors is an integer number (6773520).

Almost surely, 2^151221336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151221336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216752640).

151221336 is an abundant number, since it is smaller than the sum of its proper divisors (282283944).

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

151221336 is a wasteful number, since it uses less digits than its factorization.

151221336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024 (or 3020 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 151221336 is about 12297.2084637124. The cubic root of 151221336 is about 532.7674584910.

Adding to 151221336 its reverse (633122151), we get a palindrome (784343487).

The spelling of 151221336 in words is "one hundred fifty-one million, two hundred twenty-one thousand, three hundred thirty-six".