198922240000 has 320 divisors, whose sum is σ = 542947513680. Its totient is φ = 72253440000.

The previous prime is 198922239977. The next prime is 198922240003. The reversal of 198922240000 is 42229891.

It is a tau number, because it is divible by the number of its divisors (320).

It is not an unprimeable number, because it can be changed into a prime (198922240003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 225279559 + ... + 225280441.

Almost surely, 2^198922240000 is an apocalyptic number.

198922240000 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 198922240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271473756840).

198922240000 is an abundant number, since it is smaller than the sum of its proper divisors (344025273680).

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

198922240000 is an frugal number, since it uses more digits than its factorization.

198922240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

Adding to 198922240000 its reverse (42229891), we get a palindrome (198964469891).

The spelling of 198922240000 in words is "one hundred ninety-eight billion, nine hundred twenty-two million, two hundred forty thousand".