1021100100198 has 8 divisors (see below), whose sum is σ = 2042200200408. Its totient is φ = 340366700064.

The previous prime is 1021100100173. The next prime is 1021100100199. The reversal of 1021100100198 is 8910010011201.

It is a sphenic number, since it is the product of 3 distinct primes.

1021100100198 is an admirable number.

It is a super-3 number, since 3×1021100100198³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021100100199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85091675011 + ... + 85091675022.

It is an arithmetic number, because the mean of its divisors is an integer number (255275025051).

Almost surely, 2^{1021100100198} is an apocalyptic number.

1021100100198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1021100100198 is a wasteful number, since it uses less digits than its factorization.

1021100100198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170183350038.

The product of its (nonzero) digits is 144, while the sum is 24.

Adding to 1021100100198 its reverse (8910010011201), we get a palindrome (9931110111399).

The spelling of 1021100100198 in words is "one trillion, twenty-one billion, one hundred million, one hundred thousand, one hundred ninety-eight".