100111202001998 has 16 divisors (see below), whose sum is σ = 169467238499760. Its totient is φ = 43935950721600.

The previous prime is 100111202001997. The next prime is 100111202002033. The reversal of 100111202001998 is 899100202111001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111202001991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78457054223 + ... + 78457055498.

It is an arithmetic number, because the mean of its divisors is an integer number (10591702406235).

Almost surely, 2^{100111202001998} is an apocalyptic number.

100111202001998 is a deficient number, since it is larger than the sum of its proper divisors (69356036497762).

100111202001998 is a wasteful number, since it uses less digits than its factorization.

100111202001998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156914109763.

The product of its (nonzero) digits is 2592, while the sum is 35.

Adding to 100111202001998 its reverse (899100202111001), we get a palindrome (999211404112999).

The spelling of 100111202001998 in words is "one hundred trillion, one hundred eleven billion, two hundred two million, one thousand, nine hundred ninety-eight".