198219022001 has 16 divisors (see below), whose sum is σ = 266140226688. Its totient is φ = 142575120000.

The previous prime is 198219021997. The next prime is 198219022003. The reversal of 198219022001 is 100220912891.

It is a cyclic number.

It is not a de Polignac number, because 198219022001 - 2² = 198219021997 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (198219022003) 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, 99009500 + ... + 99011501.

It is an arithmetic number, because the mean of its divisors is an integer number (16633764168).

Almost surely, 2^198219022001 is an apocalyptic number.

198219022001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

198219022001 is a deficient number, since it is larger than the sum of its proper divisors (67921204687).

198219022001 is a wasteful number, since it uses less digits than its factorization.

198219022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198021032.

The product of its (nonzero) digits is 5184, while the sum is 35.

Adding to 198219022001 its reverse (100220912891), we get a palindrome (298439934892).

The spelling of 198219022001 in words is "one hundred ninety-eight billion, two hundred nineteen million, twenty-two thousand, one".