221150512 has 40 divisors (see below), whose sum is σ = 473094720. Its totient is φ = 99305280.

The previous prime is 221150477. The next prime is 221150533. The reversal of 221150512 is 215051122.

It is a self number, because there is not a number n which added to its sum of digits gives 221150512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7039 + ... + 22177.

It is an arithmetic number, because the mean of its divisors is an integer number (11827368).

Almost surely, 2^221150512 is an apocalyptic number.

221150512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221150512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236547360).

221150512 is an abundant number, since it is smaller than the sum of its proper divisors (251944208).

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

221150512 is a wasteful number, since it uses less digits than its factorization.

221150512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15241 (or 15235 counting only the distinct ones).

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

The square root of 221150512 is about 14871.1301520765. The cubic root of 221150512 is about 604.7315814049.

The spelling of 221150512 in words is "two hundred twenty-one million, one hundred fifty thousand, five hundred twelve".