10001121198 has 16 divisors (see below), whose sum is σ = 20003697360. Its totient is φ = 3333464576.

The previous prime is 10001121197. The next prime is 10001121223. The reversal of 10001121198 is 89112110001.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001121191) 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, 42136 + ... + 147572.

It is an arithmetic number, because the mean of its divisors is an integer number (1250231085).

Almost surely, 2^10001121198 is an apocalyptic number.

10001121198 is an abundant number, since it is smaller than the sum of its proper divisors (10002576162).

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

10001121198 is a wasteful number, since it uses less digits than its factorization.

10001121198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121251.

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

Adding to 10001121198 its reverse (89112110001), we get a palindrome (99113231199).

The spelling of 10001121198 in words is "ten billion, one million, one hundred twenty-one thousand, one hundred ninety-eight".