16221248000 has 160 divisors (see below), whose sum is σ = 40691109888. Its totient is φ = 6449664000.

The previous prime is 16221247997. The next prime is 16221248011. The reversal of 16221248000 is 84212261.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12223337 + ... + 12224663.

Almost surely, 2^16221248000 is an apocalyptic number.

16221248000 is a gapful number since it is divisible by the number (10) 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 16221248000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20345554944).

16221248000 is an abundant number, since it is smaller than the sum of its proper divisors (24469861888).

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

16221248000 is an equidigital number, since it uses as much as digits as its factorization.

16221248000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551 (or 1525 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The spelling of 16221248000 in words is "sixteen billion, two hundred twenty-one million, two hundred forty-eight thousand".