20191101101 has 8 divisors (see below), whose sum is σ = 20273776224. Its totient is φ = 20108506320.

The previous prime is 20191101041. The next prime is 20191101109. The reversal of 20191101101 is 10110119102.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20191101101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20191101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20191101109) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 512186 + ... + 550196.

It is an arithmetic number, because the mean of its divisors is an integer number (2534222028).

Almost surely, 2^20191101101 is an apocalyptic number.

It is an amenable number.

20191101101 is a deficient number, since it is larger than the sum of its proper divisors (82675123).

20191101101 is a wasteful number, since it uses less digits than its factorization.

20191101101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40171.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 20191101101 in words is "twenty billion, one hundred ninety-one million, one hundred one thousand, one hundred one".