1001121102198 has 36 divisors (see below), whose sum is σ = 2523233800620. Its totient is φ = 286034600376.

The previous prime is 1001121102161. The next prime is 1001121102227. The reversal of 1001121102198 is 8912011211001.

It is a super-2 number, since 2×1001121102198² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 567528088 + ... + 567529851.

It is an arithmetic number, because the mean of its divisors is an integer number (70089827795).

Almost surely, 2^{1001121102198} is an apocalyptic number.

1001121102198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1001121102198 is an abundant number, since it is smaller than the sum of its proper divisors (1522112698422).

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

1001121102198 is a wasteful number, since it uses less digits than its factorization.

1001121102198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135057961 (or 1135057951 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 27.

Adding to 1001121102198 its reverse (8912011211001), we get a palindrome (9913132313199).

The spelling of 1001121102198 in words is "one trillion, one billion, one hundred twenty-one million, one hundred two thousand, one hundred ninety-eight".