1001012101998 has 8 divisors (see below), whose sum is σ = 2002024204008. Its totient is φ = 333670700664.

The previous prime is 1001012101979. The next prime is 1001012102053. The reversal of 1001012101998 is 8991012101001.

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

1001012101998 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83417675161 + ... + 83417675172.

It is an arithmetic number, because the mean of its divisors is an integer number (250253025501).

Almost surely, 2^{1001012101998} is an apocalyptic number.

1001012101998 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.

1001012101998 is a wasteful number, since it uses less digits than its factorization.

1001012101998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166835350338.

The product of its (nonzero) digits is 1296, while the sum is 33.

Adding to 1001012101998 its reverse (8991012101001), we get a palindrome (9992024202999).

The spelling of 1001012101998 in words is "one trillion, one billion, twelve million, one hundred one thousand, nine hundred ninety-eight".