10221288 has 64 divisors (see below), whose sum is σ = 31864320. Its totient is φ = 2654400.

The previous prime is 10221283. The next prime is 10221293. The reversal of 10221288 is 88212201.

It is an interprime number because it is at equal distance from previous prime (10221283) and next prime (10221293).

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

It is not an unprimeable number, because it can be changed into a prime (10221283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 918 + ... + 4613.

It is an arithmetic number, because the mean of its divisors is an integer number (497880).

Almost surely, 2^10221288 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 10221288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15932160).

10221288 is an abundant number, since it is smaller than the sum of its proper divisors (21643032).

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

10221288 is a wasteful number, since it uses less digits than its factorization.

10221288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558 (or 5554 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 10221288 is about 3197.0749131042. The cubic root of 10221288 is about 217.0210573689.

Adding to 10221288 its reverse (88212201), we get a palindrome (98433489).

The spelling of 10221288 in words is "ten million, two hundred twenty-one thousand, two hundred eighty-eight".